516220157 has 4 divisors (see below), whose sum is σ = 523291740. Its totient is φ = 509148576.

The previous prime is 516220141. The next prime is 516220183. The reversal of 516220157 is 751022615.

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

It can be written as a sum of positive squares in 2 ways, for example, as 274697476 + 241522681 = 16574^2 + 15541^2 .

It is a cyclic number.

It is not a de Polignac number, because 516220157 - 2⁴ = 516220141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516220357) 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, 3535682 + ... + 3535827.

It is an arithmetic number, because the mean of its divisors is an integer number (130822935).

Almost surely, 2^516220157 is an apocalyptic number.

It is an amenable number.

516220157 is a deficient number, since it is larger than the sum of its proper divisors (7071583).

516220157 is an equidigital number, since it uses as much as digits as its factorization.

516220157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071582.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 516220157 is about 22720.4788021732. The cubic root of 516220157 is about 802.1919869436.

The spelling of 516220157 in words is "five hundred sixteen million, two hundred twenty thousand, one hundred fifty-seven".