149117553 has 12 divisors (see below), whose sum is σ = 231960820. Its totient is φ = 91764576.

The previous prime is 149117543. The next prime is 149117599. The reversal of 149117553 is 355711941.

It is a happy number.

149117553 is a `hidden beast` number, since 1 + 4 + 91 + 17 + 553 = 666.

149117553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 87385104 + 61732449 = 9348^2 + 7857^2 .

It is not a de Polignac number, because 149117553 - 2¹⁸ = 148855409 is a prime.

It is a super-2 number, since 2×149117553² = 44472089225415618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149117503) 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, 637138 + ... + 637371.

Almost surely, 2^149117553 is an apocalyptic number.

149117553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149117553 is a deficient number, since it is larger than the sum of its proper divisors (82843267).

149117553 is a wasteful number, since it uses less digits than its factorization.

149117553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274528 (or 1274525 counting only the distinct ones).

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

The square root of 149117553 is about 12211.3698248804. The cubic root of 149117553 is about 530.2853014782.

It can be divided in two parts, 1491 and 17553, that added together give a square (19044 = 138²).

The spelling of 149117553 in words is "one hundred forty-nine million, one hundred seventeen thousand, five hundred fifty-three".