155707157 has 2 divisors, whose sum is σ = 155707158. Its totient is φ = 155707156.

The previous prime is 155707151. The next prime is 155707159. The reversal of 155707157 is 751707551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118570321 + 37136836 = 10889^2 + 6094^2 .

It is a cyclic number.

It is not a de Polignac number, because 155707157 - 2¹⁸ = 155445013 is a prime.

Together with 155707159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155707157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155707151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77853578 + 77853579.

It is an arithmetic number, because the mean of its divisors is an integer number (77853579).

Almost surely, 2^155707157 is an apocalyptic number.

It is an amenable number.

155707157 is a deficient number, since it is larger than the sum of its proper divisors (1).

155707157 is an equidigital number, since it uses as much as digits as its factorization.

155707157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42875, while the sum is 38.

The square root of 155707157 is about 12478.2673877426. The cubic root of 155707157 is about 537.9842048863.

The spelling of 155707157 in words is "one hundred fifty-five million, seven hundred seven thousand, one hundred fifty-seven".