61045839 has 16 divisors (see below), whose sum is σ = 91020640. Its totient is φ = 40435200.

The previous prime is 61045823. The next prime is 61045847. The reversal of 61045839 is 93854016.

61045839 is a `hidden beast` number, since 610 + 4 + 5 + 8 + 39 = 666.

It is not a de Polignac number, because 61045839 - 2⁴ = 61045823 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 (61045849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2962 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (5688790).

Almost surely, 2^61045839 is an apocalyptic number.

61045839 is a deficient number, since it is larger than the sum of its proper divisors (29974801).

61045839 is a wasteful number, since it uses less digits than its factorization.

61045839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567 (or 14561 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 61045839 is about 7813.1836660864. The cubic root of 61045839 is about 393.7482974983.

The spelling of 61045839 in words is "sixty-one million, forty-five thousand, eight hundred thirty-nine".