53081057 has 4 divisors (see below), whose sum is σ = 53095680. Its totient is φ = 53066436.

The previous prime is 53081029. The next prime is 53081081. The reversal of 53081057 is 75018035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75018035 = 5 ⋅15003607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53081057 is a prime.

It is a super-3 number, since 3×53081057³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a pancake number, because a pancake can be divided into 53081057 parts by 10303 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53081557) 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, 2744 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (13273920).

Almost surely, 2^53081057 is an apocalyptic number.

It is an amenable number.

53081057 is a deficient number, since it is larger than the sum of its proper divisors (14623).

53081057 is an equidigital number, since it uses as much as digits as its factorization.

53081057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14622.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 53081057 is about 7285.6747800049. The cubic root of 53081057 is about 375.8199704963.

The spelling of 53081057 in words is "fifty-three million, eighty-one thousand, fifty-seven".