149311557 has 24 divisors (see below), whose sum is σ = 227784960. Its totient is φ = 93985920.

The previous prime is 149311549. The next prime is 149311583. The reversal of 149311557 is 755113941.

It is a happy number.

149311557 is a `hidden beast` number, since 1 + 4 + 93 + 11 + 557 = 666.

It is not a de Polignac number, because 149311557 - 2³ = 149311549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149311507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56332 + ... + 58922.

It is an arithmetic number, because the mean of its divisors is an integer number (9491040).

Almost surely, 2^149311557 is an apocalyptic number.

It is an amenable number.

149311557 is a deficient number, since it is larger than the sum of its proper divisors (78473403).

149311557 is a wasteful number, since it uses less digits than its factorization.

149311557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2950 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 149311557 is about 12219.3108234466. The cubic root of 149311557 is about 530.5151713242.

The spelling of 149311557 in words is "one hundred forty-nine million, three hundred eleven thousand, five hundred fifty-seven".