149293551 has 24 divisors (see below), whose sum is σ = 225874432. Its totient is φ = 87555600.

The previous prime is 149293523. The next prime is 149293553. The reversal of 149293551 is 155392941.

It is not a de Polignac number, because 149293551 - 2¹⁰ = 149292527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149293553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4620 + ... + 17886.

Almost surely, 2^149293551 is an apocalyptic number.

149293551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149293551 is a deficient number, since it is larger than the sum of its proper divisors (76580881).

149293551 is a wasteful number, since it uses less digits than its factorization.

149293551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13323 (or 13312 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 149293551 is about 12218.5740166355. The cubic root of 149293551 is about 530.4938449103.

The spelling of 149293551 in words is "one hundred forty-nine million, two hundred ninety-three thousand, five hundred fifty-one".