253142477 has 12 divisors (see below), whose sum is σ = 298623456. Its totient is φ = 213920280.

The previous prime is 253142473. The next prime is 253142543. The reversal of 253142477 is 774241352.

It is not a de Polignac number, because 253142477 - 2² = 253142473 is a prime.

It is a super-2 number, since 2×253142477² = 128162227323391058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253142473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32903 + ... + 39860.

It is an arithmetic number, because the mean of its divisors is an integer number (24885288).

Almost surely, 2^253142477 is an apocalyptic number.

It is an amenable number.

253142477 is a deficient number, since it is larger than the sum of its proper divisors (45480979).

253142477 is an equidigital number, since it uses as much as digits as its factorization.

253142477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72848 (or 72841 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 253142477 is about 15910.4518163376. The cubic root of 253142477 is about 632.5890573303.

The spelling of 253142477 in words is "two hundred fifty-three million, one hundred forty-two thousand, four hundred seventy-seven".