253023977 has 2 divisors, whose sum is σ = 253023978. Its totient is φ = 253023976.

The previous prime is 253023973. The next prime is 253024021. The reversal of 253023977 is 779320352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249039961 + 3984016 = 15781^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 253023977 - 2² = 253023973 is a prime.

It is a super-2 number, since 2×253023977² = 128042265873793058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253023977.

It is not a weakly prime, because it can be changed into another prime (253023973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126511988 + 126511989.

It is an arithmetic number, because the mean of its divisors is an integer number (126511989).

Almost surely, 2^253023977 is an apocalyptic number.

It is an amenable number.

253023977 is a deficient number, since it is larger than the sum of its proper divisors (1).

253023977 is an equidigital number, since it uses as much as digits as its factorization.

253023977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 253023977 is about 15906.7274132676. The cubic root of 253023977 is about 632.4903336074.

The spelling of 253023977 in words is "two hundred fifty-three million, twenty-three thousand, nine hundred seventy-seven".