61230551 has 4 divisors (see below), whose sum is σ = 61247112. Its totient is φ = 61213992.

The previous prime is 61230539. The next prime is 61230569. The reversal of 61230551 is 15503216.

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

It is a cyclic number.

It is not a de Polignac number, because 61230551 - 2¹⁸ = 60968407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61232551) 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, 80 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (15311778).

Almost surely, 2^61230551 is an apocalyptic number.

61230551 is a deficient number, since it is larger than the sum of its proper divisors (16561).

61230551 is a wasteful number, since it uses less digits than its factorization.

61230551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16560.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 61230551 is about 7824.9952715641. The cubic root of 61230551 is about 394.1450310812.

Adding to 61230551 its reverse (15503216), we get a palindrome (76733767).

The spelling of 61230551 in words is "sixty-one million, two hundred thirty thousand, five hundred fifty-one".