157271473 has 2 divisors, whose sum is σ = 157271474. Its totient is φ = 157271472.

The previous prime is 157271399. The next prime is 157271537. The reversal of 157271473 is 374172751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156925729 + 345744 = 12527^2 + 588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157271473 is a prime.

It is not a weakly prime, because it can be changed into another prime (157271173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78635736 + 78635737.

It is an arithmetic number, because the mean of its divisors is an integer number (78635737).

Almost surely, 2^157271473 is an apocalyptic number.

It is an amenable number.

157271473 is a deficient number, since it is larger than the sum of its proper divisors (1).

157271473 is an equidigital number, since it uses as much as digits as its factorization.

157271473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41160, while the sum is 37.

The square root of 157271473 is about 12540.7923593368. The cubic root of 157271473 is about 539.7798290818.

The spelling of 157271473 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, four hundred seventy-three".