149778552 has 64 divisors (see below), whose sum is σ = 466848000. Its totient is φ = 38903040.

The previous prime is 149778529. The next prime is 149778569. The reversal of 149778552 is 255877941.

149778552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×149778552² = 44867229278433408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38677 + ... + 42372.

It is an arithmetic number, because the mean of its divisors is an integer number (7294500).

Almost surely, 2^149778552 is an apocalyptic number.

149778552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149778552 is an abundant number, since it is smaller than the sum of its proper divisors (317069448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149778552 is a wasteful number, since it uses less digits than its factorization.

149778552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81076 (or 81072 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The square root of 149778552 is about 12238.4047980119. The cubic root of 149778552 is about 531.0676851311.

The spelling of 149778552 in words is "one hundred forty-nine million, seven hundred seventy-eight thousand, five hundred fifty-two".