253456538 has 8 divisors (see below), whose sum is σ = 384104532. Its totient is φ = 125421696.

The previous prime is 253456517. The next prime is 253456559. The reversal of 253456538 is 835654352.

It is an interprime number because it is at equal distance from previous prime (253456517) and next prime (253456559).

It can be written as a sum of positive squares in 2 ways, for example, as 243765769 + 9690769 = 15613^2 + 3113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 253456495 and 253456504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653045 + ... + 653432.

Almost surely, 2^253456538 is an apocalyptic number.

253456538 is a deficient number, since it is larger than the sum of its proper divisors (130647994).

253456538 is a wasteful number, since it uses less digits than its factorization.

253456538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306576.

The product of its digits is 432000, while the sum is 41.

The square root of 253456538 is about 15920.3184013386. The cubic root of 253456538 is about 632.8505562437.

The spelling of 253456538 in words is "two hundred fifty-three million, four hundred fifty-six thousand, five hundred thirty-eight".