145131651 has 12 divisors (see below), whose sum is σ = 239582512. Its totient is φ = 82932336.

The previous prime is 145131643. The next prime is 145131653. The reversal of 145131651 is 156131541.

145131651 is a `hidden beast` number, since 1 + 4 + 5 + 1 + 3 + 1 + 651 = 666.

It is not a de Polignac number, because 145131651 - 2³ = 145131643 is a prime.

It is a super-2 number, since 2×145131651² = 42126392243971602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145131653) 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, 1151776 + ... + 1151901.

Almost surely, 2^145131651 is an apocalyptic number.

145131651 is a deficient number, since it is larger than the sum of its proper divisors (94450861).

145131651 is a wasteful number, since it uses less digits than its factorization.

145131651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303690 (or 2303687 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 145131651 is about 12047.0598487764. The cubic root of 145131651 is about 525.5177368770.

The spelling of 145131651 in words is "one hundred forty-five million, one hundred thirty-one thousand, six hundred fifty-one".