61442411 has 4 divisors (see below), whose sum is σ = 61470024. Its totient is φ = 61414800.

The previous prime is 61442401. The next prime is 61442429. The reversal of 61442411 is 11424416.

It is a happy number.

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 61442411 - 2⁶ = 61442347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61442401) 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, 10145 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (15367506).

Almost surely, 2^61442411 is an apocalyptic number.

61442411 is a deficient number, since it is larger than the sum of its proper divisors (27613).

61442411 is a wasteful number, since it uses less digits than its factorization.

61442411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27612.

The product of its digits is 768, while the sum is 23.

The square root of 61442411 is about 7838.5209701831. The cubic root of 61442411 is about 394.5990933161.

Adding to 61442411 its reverse (11424416), we get a palindrome (72866827).

The spelling of 61442411 in words is "sixty-one million, four hundred forty-two thousand, four hundred eleven".