156406057 has 2 divisors, whose sum is σ = 156406058. Its totient is φ = 156406056.

The previous prime is 156406039. The next prime is 156406079. The reversal of 156406057 is 750604651.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147768336 + 8637721 = 12156^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 156406057 - 2²⁷ = 22188329 is a prime.

It is not a weakly prime, because it can be changed into another prime (156406027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78203028 + 78203029.

It is an arithmetic number, because the mean of its divisors is an integer number (78203029).

Almost surely, 2^156406057 is an apocalyptic number.

It is an amenable number.

156406057 is a deficient number, since it is larger than the sum of its proper divisors (1).

156406057 is an equidigital number, since it uses as much as digits as its factorization.

156406057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 156406057 is about 12506.2407221355. The cubic root of 156406057 is about 538.7879273044.

The spelling of 156406057 in words is "one hundred fifty-six million, four hundred six thousand, fifty-seven".