53291557 has 8 divisors (see below), whose sum is σ = 58196160. Its totient is φ = 48396960.

The previous prime is 53291551. The next prime is 53291587. The reversal of 53291557 is 75519235.

It is a happy number.

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-53291557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53291551) 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, 12673 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (7274520).

Almost surely, 2^53291557 is an apocalyptic number.

It is an amenable number.

53291557 is a deficient number, since it is larger than the sum of its proper divisors (4904603).

53291557 is a wasteful number, since it uses less digits than its factorization.

53291557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003.

The product of its digits is 47250, while the sum is 37.

The square root of 53291557 is about 7300.1066430567. The cubic root of 53291557 is about 376.3161032924.

It can be divided in two parts, 5329 and 1557, that added together give a palindrome (6886).

The spelling of 53291557 in words is "fifty-three million, two hundred ninety-one thousand, five hundred fifty-seven".