145157452 has 12 divisors (see below), whose sum is σ = 277118856. Its totient is φ = 65980640.

The previous prime is 145157447. The next prime is 145157471. The reversal of 145157452 is 254751541.

145157452 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 2×145157452² = 42141371742264608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1649473 + ... + 1649560.

It is an arithmetic number, because the mean of its divisors is an integer number (23093238).

Almost surely, 2^145157452 is an apocalyptic number.

It is an amenable number.

145157452 is a deficient number, since it is larger than the sum of its proper divisors (131961404).

145157452 is a wasteful number, since it uses less digits than its factorization.

145157452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299048 (or 3299046 counting only the distinct ones).

The product of its digits is 28000, while the sum is 34.

The square root of 145157452 is about 12048.1306433820. The cubic root of 145157452 is about 525.5488766034.

The spelling of 145157452 in words is "one hundred forty-five million, one hundred fifty-seven thousand, four hundred fifty-two".