253540722 has 16 divisors (see below), whose sum is σ = 507682080. Its totient is φ = 84413472.

The previous prime is 253540717. The next prime is 253540733. The reversal of 253540722 is 227045352.

It is a self number, because there is not a number n which added to its sum of digits gives 253540722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19443 + ... + 29750.

It is an arithmetic number, because the mean of its divisors is an integer number (31730130).

Almost surely, 2^253540722 is an apocalyptic number.

253540722 is an abundant number, since it is smaller than the sum of its proper divisors (254141358).

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

253540722 is a wasteful number, since it uses less digits than its factorization.

253540722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50057.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 253540722 is about 15922.9620988056. The cubic root of 253540722 is about 632.9206142693.

The spelling of 253540722 in words is "two hundred fifty-three million, five hundred forty thousand, seven hundred twenty-two".