815192051 has 2 divisors, whose sum is σ = 815192052. Its totient is φ = 815192050.

The previous prime is 815192039. The next prime is 815192069. The reversal of 815192051 is 150291518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815192051 - 2²⁶ = 748083187 is a prime.

It is a super-3 number, since 3×815192051³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 815191999 and 815192017.

It is not a weakly prime, because it can be changed into another prime (815192071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407596025 + 407596026.

It is an arithmetic number, because the mean of its divisors is an integer number (407596026).

Almost surely, 2^815192051 is an apocalyptic number.

815192051 is a deficient number, since it is larger than the sum of its proper divisors (1).

815192051 is an equidigital number, since it uses as much as digits as its factorization.

815192051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 815192051 is about 28551.5682756657. The cubic root of 815192051 is about 934.1572285200.

The spelling of 815192051 in words is "eight hundred fifteen million, one hundred ninety-two thousand, fifty-one".