970751257 has 4 divisors (see below), whose sum is σ = 1109430016. Its totient is φ = 832072500.

The previous prime is 970751183. The next prime is 970751279. The reversal of 970751257 is 752157079.

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 de Polignac number, because none of the positive numbers 2^k-970751257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970751557) 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, 69339369 + ... + 69339382.

It is an arithmetic number, because the mean of its divisors is an integer number (277357504).

Almost surely, 2^970751257 is an apocalyptic number.

It is an amenable number.

970751257 is a deficient number, since it is larger than the sum of its proper divisors (138678759).

970751257 is a wasteful number, since it uses less digits than its factorization.

970751257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138678758.

The product of its (nonzero) digits is 154350, while the sum is 43.

The square root of 970751257 is about 31156.8813747461. The cubic root of 970751257 is about 990.1537893250.

The spelling of 970751257 in words is "nine hundred seventy million, seven hundred fifty-one thousand, two hundred fifty-seven".