253145432 has 8 divisors (see below), whose sum is σ = 474647700. Its totient is φ = 126572712.

The previous prime is 253145423. The next prime is 253145441. The reversal of 253145432 is 234541352.

It is a happy number.

253145432 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 (253145423) and next prime (253145441).

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 253145395 and 253145404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15821582 + ... + 15821597.

Almost surely, 2^253145432 is an apocalyptic number.

It is an amenable number.

253145432 is a deficient number, since it is larger than the sum of its proper divisors (221502268).

253145432 is a wasteful number, since it uses less digits than its factorization.

253145432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31643185 (or 31643181 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 253145432 is about 15910.5446795514. The cubic root of 253145432 is about 632.5915187813.

Adding to 253145432 its reverse (234541352), we get a palindrome (487686784).

The spelling of 253145432 in words is "two hundred fifty-three million, one hundred forty-five thousand, four hundred thirty-two".