745074251 has 4 divisors (see below), whose sum is σ = 745508904. Its totient is φ = 744639600.

The previous prime is 745074229. The next prime is 745074271. The reversal of 745074251 is 152470547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745074251 is a prime.

It is a super-2 number, since 2×745074251² = 1110271279006422002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745074271) 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, 214745 + ... + 218186.

It is an arithmetic number, because the mean of its divisors is an integer number (186377226).

Almost surely, 2^745074251 is an apocalyptic number.

745074251 is a deficient number, since it is larger than the sum of its proper divisors (434653).

745074251 is a wasteful number, since it uses less digits than its factorization.

745074251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434652.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 745074251 is about 27296.0482671027. The cubic root of 745074251 is about 906.5668860211.

The spelling of 745074251 in words is "seven hundred forty-five million, seventy-four thousand, two hundred fifty-one".