145072516 has 6 divisors (see below), whose sum is σ = 253876910. Its totient is φ = 72536256.

The previous prime is 145072511. The next prime is 145072537. The reversal of 145072516 is 615270541.

It can be written as a sum of positive squares in only one way, i.e., 96825600 + 48246916 = 9840^2 + 6946^2 .

It is not an unprimeable number, because it can be changed into a prime (145072511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18134061 + ... + 18134068.

Almost surely, 2^145072516 is an apocalyptic number.

It is an amenable number.

145072516 is a deficient number, since it is larger than the sum of its proper divisors (108804394).

145072516 is a wasteful number, since it uses less digits than its factorization.

145072516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36268133 (or 36268131 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 145072516 is about 12044.6052654290. The cubic root of 145072516 is about 525.4463517750.

The spelling of 145072516 in words is "one hundred forty-five million, seventy-two thousand, five hundred sixteen".