745522531 has 8 divisors (see below), whose sum is σ = 804705440. Its totient is φ = 686601792.

The previous prime is 745522487. The next prime is 745522559. The reversal of 745522531 is 135225547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745522531 is a prime.

It is a super-2 number, since 2×745522531² = 1111607688457291922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745522031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59610 + ... + 71023.

It is an arithmetic number, because the mean of its divisors is an integer number (100588180).

Almost surely, 2^745522531 is an apocalyptic number.

745522531 is a deficient number, since it is larger than the sum of its proper divisors (59182909).

745522531 is a wasteful number, since it uses less digits than its factorization.

745522531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131085.

The product of its digits is 42000, while the sum is 34.

The square root of 745522531 is about 27304.2584773877. The cubic root of 745522531 is about 906.7486640235.

The spelling of 745522531 in words is "seven hundred forty-five million, five hundred twenty-two thousand, five hundred thirty-one".