39957051 has 4 divisors (see below), whose sum is σ = 53276072. Its totient is φ = 26638032.

The previous prime is 39957031. The next prime is 39957091. The reversal of 39957051 is 15075993.

39957051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 39957051 - 2²⁵ = 6402619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39957031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6659506 + ... + 6659511.

It is an arithmetic number, because the mean of its divisors is an integer number (13319018).

Almost surely, 2^39957051 is an apocalyptic number.

39957051 is a deficient number, since it is larger than the sum of its proper divisors (13319021).

39957051 is a wasteful number, since it uses less digits than its factorization.

39957051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319020.

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 39957051 is about 6321.1589918305. The cubic root of 39957051 is about 341.8727425719.

The spelling of 39957051 in words is "thirty-nine million, nine hundred fifty-seven thousand, fifty-one".