750000057 has 4 divisors (see below), whose sum is σ = 1000000080. Its totient is φ = 500000036.

The previous prime is 750000007. The next prime is 750000073.

750000057 is nontrivially palindromic in base 10.

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-750000057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 749999991 and 750000036.

It is not an unprimeable number, because it can be changed into a prime (750000007) 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, 125000007 + ... + 125000012.

It is an arithmetic number, because the mean of its divisors is an integer number (250000020).

Almost surely, 2^750000057 is an apocalyptic number.

It is an amenable number.

750000057 is a deficient number, since it is larger than the sum of its proper divisors (250000023).

750000057 is a wasteful number, since it uses less digits than its factorization.

750000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250000022.

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 750000057 is about 27386.1289159311. The cubic root of 750000057 is about 908.5603194329.

It can be divided in two parts, 7500000 and 57, that added together give a palindrome (7500057).

The spelling of 750000057 in words is "seven hundred fifty million, fifty-seven", and thus it is an aban number.