99997057 has 4 divisors (see below), whose sum is σ = 105260080. Its totient is φ = 94734036.

The previous prime is 99997033. The next prime is 99997063. The reversal of 99997057 is 75079999.

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 a de Polignac number, because none of the positive numbers 2^k-99997057 is a prime.

It is a super-2 number, since 2×99997057² = 19998822817322498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99996989 and 99997007.

It is not an unprimeable number, because it can be changed into a prime (99997067) 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, 2631483 + ... + 2631520.

It is an arithmetic number, because the mean of its divisors is an integer number (26315020).

Almost surely, 2^99997057 is an apocalyptic number.

It is an amenable number.

99997057 is a deficient number, since it is larger than the sum of its proper divisors (5263023).

99997057 is a wasteful number, since it uses less digits than its factorization.

99997057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263022.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 99997057 is about 9999.8528489173. The cubic root of 99997057 is about 464.1543299180.

The spelling of 99997057 in words is "ninety-nine million, nine hundred ninety-seven thousand, fifty-seven".