122547157 has 2 divisors, whose sum is σ = 122547158. Its totient is φ = 122547156.

The previous prime is 122547143. The next prime is 122547167. The reversal of 122547157 is 751745221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99880036 + 22667121 = 9994^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 122547157 - 2¹¹ = 122545109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122547137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61273578 + 61273579.

It is an arithmetic number, because the mean of its divisors is an integer number (61273579).

Almost surely, 2^122547157 is an apocalyptic number.

It is an amenable number.

122547157 is a deficient number, since it is larger than the sum of its proper divisors (1).

122547157 is an equidigital number, since it uses as much as digits as its factorization.

122547157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19600, while the sum is 34.

The square root of 122547157 is about 11070.1019417167. The cubic root of 122547157 is about 496.7079145860.

The spelling of 122547157 in words is "one hundred twenty-two million, five hundred forty-seven thousand, one hundred fifty-seven".