749472551 has 4 divisors (see below), whose sum is σ = 750975000. Its totient is φ = 747970104.

The previous prime is 749472541. The next prime is 749472583. The reversal of 749472551 is 155274947.

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

It is a cyclic number.

It is not a de Polignac number, because 749472551 - 2²⁶ = 682363687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749472541) 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, 750476 + ... + 751473.

It is an arithmetic number, because the mean of its divisors is an integer number (187743750).

Almost surely, 2^749472551 is an apocalyptic number.

749472551 is a deficient number, since it is larger than the sum of its proper divisors (1502449).

749472551 is a wasteful number, since it uses less digits than its factorization.

749472551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502448.

The product of its digits is 352800, while the sum is 44.

The square root of 749472551 is about 27376.4963244021. The cubic root of 749472551 is about 908.3472601480.

The spelling of 749472551 in words is "seven hundred forty-nine million, four hundred seventy-two thousand, five hundred fifty-one".