61057923 has 8 divisors (see below), whose sum is σ = 81489168. Its totient is φ = 40665984.

The previous prime is 61057901. The next prime is 61057933. The reversal of 61057923 is 32975016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61057923 - 2⁵ = 61057891 is a prime.

It is a super-2 number, since 2×61057923² = 7456139922147858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61057933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5986 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (10186146).

Almost surely, 2^61057923 is an apocalyptic number.

61057923 is a deficient number, since it is larger than the sum of its proper divisors (20431245).

61057923 is a wasteful number, since it uses less digits than its factorization.

61057923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 61057923 is about 7813.9569361496. The cubic root of 61057923 is about 393.7742765581.

It can be divided in two parts, 6105 and 7923, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 61057923 in words is "sixty-one million, fifty-seven thousand, nine hundred twenty-three".