149554957 has 2 divisors, whose sum is σ = 149554958. Its totient is φ = 149554956.

The previous prime is 149554949. The next prime is 149554963. The reversal of 149554957 is 759455941.

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., 137030436 + 12524521 = 11706^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 149554957 - 2³ = 149554949 is a prime.

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 149554957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149554997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74777478 + 74777479.

It is an arithmetic number, because the mean of its divisors is an integer number (74777479).

Almost surely, 2^149554957 is an apocalyptic number.

It is an amenable number.

149554957 is a deficient number, since it is larger than the sum of its proper divisors (1).

149554957 is an equidigital number, since it uses as much as digits as its factorization.

149554957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 49.

The square root of 149554957 is about 12229.2664129947. The cubic root of 149554957 is about 530.8032876477.

The spelling of 149554957 in words is "one hundred forty-nine million, five hundred fifty-four thousand, nine hundred fifty-seven".