145133552 has 30 divisors (see below), whose sum is σ = 296786808. Its totient is φ = 68744736.

The previous prime is 145133543. The next prime is 145133561. The reversal of 145133552 is 255331541.

145133552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145133543) and next prime (145133561).

It is a super-2 number, since 2×145133552² = 42127495832273408, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 6788 + ... + 18339.

Almost surely, 2^145133552 is an apocalyptic number.

It is an amenable number.

145133552 is an abundant number, since it is smaller than the sum of its proper divisors (151653256).

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

145133552 is a wasteful number, since it uses less digits than its factorization.

145133552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25173 (or 25148 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 145133552 is about 12047.1387474371. The cubic root of 145133552 is about 525.5200313566.

The spelling of 145133552 in words is "one hundred forty-five million, one hundred thirty-three thousand, five hundred fifty-two".