51356057 has 4 divisors (see below), whose sum is σ = 53012736. Its totient is φ = 49699380.

The previous prime is 51356021. The next prime is 51356059. The reversal of 51356057 is 75065315.

51356057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 51356057 - 2¹⁰ = 51355033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51356059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828293 + ... + 828354.

It is an arithmetic number, because the mean of its divisors is an integer number (13253184).

Almost surely, 2^51356057 is an apocalyptic number.

It is an amenable number.

51356057 is a deficient number, since it is larger than the sum of its proper divisors (1656679).

51356057 is a wasteful number, since it uses less digits than its factorization.

51356057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656678.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 51356057 is about 7166.3140455886. The cubic root of 51356057 is about 371.7039909250.

The spelling of 51356057 in words is "fifty-one million, three hundred fifty-six thousand, fifty-seven".