57081437 has 8 divisors (see below), whose sum is σ = 65335872. Its totient is φ = 48852000.

The previous prime is 57081433. The next prime is 57081439. The reversal of 57081437 is 73418075.

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

It is a cyclic number.

It is not a de Polignac number, because 57081437 - 2² = 57081433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57081397 and 57081406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57081433) 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, 1064 + ... + 10737.

It is an arithmetic number, because the mean of its divisors is an integer number (8166984).

Almost surely, 2^57081437 is an apocalyptic number.

It is an amenable number.

57081437 is a deficient number, since it is larger than the sum of its proper divisors (8254435).

57081437 is a wasteful number, since it uses less digits than its factorization.

57081437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12499.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57081437 is about 7555.2258073469. The cubic root of 57081437 is about 385.0333068391.

The spelling of 57081437 in words is "fifty-seven million, eighty-one thousand, four hundred thirty-seven".