149506551 has 12 divisors (see below), whose sum is σ = 228657312. Its totient is φ = 93807936.

The previous prime is 149506523. The next prime is 149506589. The reversal of 149506551 is 155605941.

149506551 is a `hidden beast` number, since 14 + 95 + 0 + 6 + 551 = 666.

It is not a de Polignac number, because 149506551 - 2¹¹ = 149504503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149506151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 488431 + ... + 488736.

It is an arithmetic number, because the mean of its divisors is an integer number (19054776).

Almost surely, 2^149506551 is an apocalyptic number.

149506551 is a deficient number, since it is larger than the sum of its proper divisors (79150761).

149506551 is a wasteful number, since it uses less digits than its factorization.

149506551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977190 (or 977187 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 149506551 is about 12227.2871480145. The cubic root of 149506551 is about 530.7460136371.

The spelling of 149506551 in words is "one hundred forty-nine million, five hundred six thousand, five hundred fifty-one".