253980722 has 18 divisors (see below), whose sum is σ = 389577279. Its totient is φ = 124184380.

The previous prime is 253980709. The next prime is 253980757. The reversal of 253980722 is 227089352.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 126990361 = 11269^2 + 11269^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11269.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1329647 + ... + 1329837.

Almost surely, 2^253980722 is an apocalyptic number.

253980722 is a deficient number, since it is larger than the sum of its proper divisors (135596557).

253980722 is an frugal number, since it uses more digits than its factorization.

253980722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 253980722 is about 15936.7726343824. The cubic root of 253980722 is about 633.2865306750.

The spelling of 253980722 in words is "two hundred fifty-three million, nine hundred eighty thousand, seven hundred twenty-two".