61059421 has 4 divisors (see below), whose sum is σ = 61113532. Its totient is φ = 61005312.

The previous prime is 61059409. The next prime is 61059433. The reversal of 61059421 is 12495016.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61059409) and next prime (61059433).

It can be written as a sum of positive squares in 2 ways, for example, as 19456921 + 41602500 = 4411^2 + 6450^2 .

It is a cyclic number.

It is not a de Polignac number, because 61059421 - 2¹³ = 61051229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61059421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61059451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25326 + ... + 27631.

It is an arithmetic number, because the mean of its divisors is an integer number (15278383).

Almost surely, 2^61059421 is an apocalyptic number.

It is an amenable number.

61059421 is a deficient number, since it is larger than the sum of its proper divisors (54111).

61059421 is a wasteful number, since it uses less digits than its factorization.

61059421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54110.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61059421 is about 7814.0527896860. The cubic root of 61059421 is about 393.7774968284. Note that the first 3 decimals are identical.

It can be divided in two parts, 610 and 59421, that added together give a triangular number (60031 = T₃₄₆).

The spelling of 61059421 in words is "sixty-one million, fifty-nine thousand, four hundred twenty-one".