64572523 has 8 divisors (see below), whose sum is σ = 68387328. Its totient is φ = 60841704.

The previous prime is 64572493. The next prime is 64572551. The reversal of 64572523 is 32527546.

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-64572523 is a prime.

It is a super-2 number, since 2×64572523² = 8339221453171058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64572593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19411 + ... + 22492.

It is an arithmetic number, because the mean of its divisors is an integer number (8548416).

Almost surely, 2^64572523 is an apocalyptic number.

64572523 is a deficient number, since it is larger than the sum of its proper divisors (3814805).

64572523 is a wasteful number, since it uses less digits than its factorization.

64572523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41993.

The product of its digits is 50400, while the sum is 34.

The square root of 64572523 is about 8035.7030184048. The cubic root of 64572523 is about 401.1892171526.

The spelling of 64572523 in words is "sixty-four million, five hundred seventy-two thousand, five hundred twenty-three".