7900057 has 4 divisors (see below), whose sum is σ = 8618256. Its totient is φ = 7181860.

The previous prime is 7900043. The next prime is 7900073. The reversal of 7900057 is 7500097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7900057 - 2⁷ = 7899929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7899998 and 7900034.

It is not an unprimeable number, because it can be changed into a prime (7900007) 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, 359083 + ... + 359104.

It is an arithmetic number, because the mean of its divisors is an integer number (2154564).

Almost surely, 2^7900057 is an apocalyptic number.

It is an amenable number.

7900057 is a deficient number, since it is larger than the sum of its proper divisors (718199).

7900057 is a wasteful number, since it uses less digits than its factorization.

7900057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718198.

The product of its (nonzero) digits is 2205, while the sum is 28.

The square root of 7900057 is about 2810.7040043377. The cubic root of 7900057 is about 199.1636491279.

The spelling of 7900057 in words is "seven million, nine hundred thousand, fifty-seven".