154572157 has 2 divisors, whose sum is σ = 154572158. Its totient is φ = 154572156.

The previous prime is 154572151. The next prime is 154572161. The reversal of 154572157 is 751275451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85914361 + 68657796 = 9269^2 + 8286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154572157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154572151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77286078 + 77286079.

It is an arithmetic number, because the mean of its divisors is an integer number (77286079).

Almost surely, 2^154572157 is an apocalyptic number.

It is an amenable number.

154572157 is a deficient number, since it is larger than the sum of its proper divisors (1).

154572157 is an equidigital number, since it uses as much as digits as its factorization.

154572157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49000, while the sum is 37.

The square root of 154572157 is about 12432.7051360514. The cubic root of 154572157 is about 536.6738353187.

The spelling of 154572157 in words is "one hundred fifty-four million, five hundred seventy-two thousand, one hundred fifty-seven".