157200051 has 4 divisors (see below), whose sum is σ = 209600072. Its totient is φ = 104800032.

The previous prime is 157200049. The next prime is 157200061. The reversal of 157200051 is 150002751.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 157200051 - 2¹ = 157200049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157200031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26200006 + ... + 26200011.

It is an arithmetic number, because the mean of its divisors is an integer number (52400018).

Almost surely, 2^157200051 is an apocalyptic number.

157200051 is a deficient number, since it is larger than the sum of its proper divisors (52400021).

157200051 is an equidigital number, since it uses as much as digits as its factorization.

157200051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52400020.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 157200051 is about 12537.9444487524. The cubic root of 157200051 is about 539.6981062883.

The spelling of 157200051 in words is "one hundred fifty-seven million, two hundred thousand, fifty-one".