156196451 has 2 divisors, whose sum is σ = 156196452. Its totient is φ = 156196450.

The previous prime is 156196441. The next prime is 156196471. The reversal of 156196451 is 154691651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156196451 - 2⁶ = 156196387 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156196441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78098225 + 78098226.

It is an arithmetic number, because the mean of its divisors is an integer number (78098226).

Almost surely, 2^156196451 is an apocalyptic number.

156196451 is a deficient number, since it is larger than the sum of its proper divisors (1).

156196451 is an equidigital number, since it uses as much as digits as its factorization.

156196451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 156196451 is about 12497.8578564488. The cubic root of 156196451 is about 538.5471359719.

The spelling of 156196451 in words is "one hundred fifty-six million, one hundred ninety-six thousand, four hundred fifty-one".