51650057 has 4 divisors (see below), whose sum is σ = 51895056. Its totient is φ = 51405060.

The previous prime is 51650033. The next prime is 51650069. The reversal of 51650057 is 75005615.

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 51650057 - 2¹² = 51645961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51650257) 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, 122183 + ... + 122604.

It is an arithmetic number, because the mean of its divisors is an integer number (12973764).

Almost surely, 2^51650057 is an apocalyptic number.

It is an amenable number.

51650057 is a deficient number, since it is larger than the sum of its proper divisors (244999).

51650057 is a wasteful number, since it uses less digits than its factorization.

51650057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244998.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 51650057 is about 7186.7974091385. The cubic root of 51650057 is about 372.4119444129.

The spelling of 51650057 in words is "fifty-one million, six hundred fifty thousand, fifty-seven".