145953252 has 30 divisors (see below), whose sum is σ = 381551478. Its totient is φ = 48650976.

The previous prime is 145953251. The next prime is 145953263. The reversal of 145953252 is 252359541.

It is a happy number.

145953252 is a `hidden beast` number, since 14 + 595 + 3 + 2 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86601636 + 59351616 = 9306^2 + 7704^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (145953251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 224913 + ... + 225560.

Almost surely, 2^145953252 is an apocalyptic number.

145953252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145953252 is an abundant number, since it is smaller than the sum of its proper divisors (235598226).

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

145953252 is a wasteful number, since it uses less digits than its factorization.

145953252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450489 (or 450478 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 145953252 is about 12081.1113727173. Note that the first 3 decimals coincide. The cubic root of 145953252 is about 526.5075363569.

The spelling of 145953252 in words is "one hundred forty-five million, nine hundred fifty-three thousand, two hundred fifty-two".