157505897 has 2 divisors, whose sum is σ = 157505898. Its totient is φ = 157505896.

The previous prime is 157505893. The next prime is 157505911. The reversal of 157505897 is 798505751.

It is a happy number.

157505897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108659776 + 48846121 = 10424^2 + 6989^2 .

It is a cyclic number.

It is not a de Polignac number, because 157505897 - 2² = 157505893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157505891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78752948 + 78752949.

It is an arithmetic number, because the mean of its divisors is an integer number (78752949).

Almost surely, 2^157505897 is an apocalyptic number.

It is an amenable number.

157505897 is a deficient number, since it is larger than the sum of its proper divisors (1).

157505897 is an equidigital number, since it uses as much as digits as its factorization.

157505897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 47.

The square root of 157505897 is about 12550.1353379157. The cubic root of 157505897 is about 540.0478889857.

The spelling of 157505897 in words is "one hundred fifty-seven million, five hundred five thousand, eight hundred ninety-seven".