149972751 has 24 divisors (see below), whose sum is σ = 219243024. Its totient is φ = 98784000.

The previous prime is 149972707. The next prime is 149972789. The reversal of 149972751 is 157279941.

149972751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149972751 - 2¹¹ = 149970703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149972697 and 149972706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149972051) 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, 444855 + ... + 445191.

It is an arithmetic number, because the mean of its divisors is an integer number (9135126).

Almost surely, 2^149972751 is an apocalyptic number.

149972751 is a deficient number, since it is larger than the sum of its proper divisors (69270273).

149972751 is a wasteful number, since it uses less digits than its factorization.

149972751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 788 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 149972751 is about 12246.3362276233. The cubic root of 149972751 is about 531.2971088836.

The spelling of 149972751 in words is "one hundred forty-nine million, nine hundred seventy-two thousand, seven hundred fifty-one".