157780051 has 16 divisors (see below), whose sum is σ = 186617088. Its totient is φ = 131508000.

The previous prime is 157780037. The next prime is 157780061. The reversal of 157780051 is 150087751.

It is not a de Polignac number, because 157780051 - 2¹⁵ = 157747283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157779989 and 157780016.

It is not an unprimeable number, because it can be changed into a prime (157780061) 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 15 ways as a sum of consecutive naturals, for example, 17940 + ... + 25246.

It is an arithmetic number, because the mean of its divisors is an integer number (11663568).

Almost surely, 2^157780051 is an apocalyptic number.

157780051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157780051 is a deficient number, since it is larger than the sum of its proper divisors (28837037).

157780051 is a wasteful number, since it uses less digits than its factorization.

157780051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 157780051 is about 12561.0529415332. The cubic root of 157780051 is about 540.3610422765.

The spelling of 157780051 in words is "one hundred fifty-seven million, seven hundred eighty thousand, fifty-one".