57311553 has 8 divisors (see below), whose sum is σ = 82293568. Its totient is φ = 35268624.

The previous prime is 57311549. The next prime is 57311593. The reversal of 57311553 is 35511375.

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

It is not a de Polignac number, because 57311553 - 2² = 57311549 is a prime.

It is a super-2 number, since 2×57311553² = 6569228214543618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57311553.

It is not an unprimeable number, because it can be changed into a prime (57311533) 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, 734725 + ... + 734802.

It is an arithmetic number, because the mean of its divisors is an integer number (10286696).

Almost surely, 2^57311553 is an apocalyptic number.

It is an amenable number.

57311553 is a deficient number, since it is larger than the sum of its proper divisors (24982015).

57311553 is a wasteful number, since it uses less digits than its factorization.

57311553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469543.

The product of its digits is 7875, while the sum is 30.

The square root of 57311553 is about 7570.4394192147. The cubic root of 57311553 is about 385.5500161367.

The spelling of 57311553 in words is "fifty-seven million, three hundred eleven thousand, five hundred fifty-three".