145599156 has 18 divisors (see below), whose sum is σ = 368042402. Its totient is φ = 48533040.

The previous prime is 145599143. The next prime is 145599173. The reversal of 145599156 is 651995541.

It is a happy number.

145599156 is a `hidden beast` number, since 1 + 4 + 5 + 599 + 1 + 56 = 666.

145599156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 128459556 + 17139600 = 11334^2 + 4140^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×145599156² = 42398228455824672, 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 5 ways as a sum of consecutive naturals, for example, 2022175 + ... + 2022246.

Almost surely, 2^145599156 is an apocalyptic number.

It is an amenable number.

145599156 is an abundant number, since it is smaller than the sum of its proper divisors (222443246).

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

145599156 is a wasteful number, since it uses less digits than its factorization.

145599156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044431 (or 4044426 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 145599156 is about 12066.4475302385. The cubic root of 145599156 is about 526.0814063406.

The spelling of 145599156 in words is "one hundred forty-five million, five hundred ninety-nine thousand, one hundred fifty-six".