747131457 has 4 divisors (see below), whose sum is σ = 996175280. Its totient is φ = 498087636.

The previous prime is 747131449. The next prime is 747131543. The reversal of 747131457 is 754131747.

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 not a de Polignac number, because 747131457 - 2³ = 747131449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747131557) 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, 124521907 + ... + 124521912.

It is an arithmetic number, because the mean of its divisors is an integer number (249043820).

Almost surely, 2^747131457 is an apocalyptic number.

It is an amenable number.

747131457 is a deficient number, since it is larger than the sum of its proper divisors (249043823).

747131457 is a wasteful number, since it uses less digits than its factorization.

747131457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249043822.

The product of its digits is 82320, while the sum is 39.

The square root of 747131457 is about 27333.7055116938. The cubic root of 747131457 is about 907.4004857146.

The spelling of 747131457 in words is "seven hundred forty-seven million, one hundred thirty-one thousand, four hundred fifty-seven".