253677973 has 2 divisors, whose sum is σ = 253677974. Its totient is φ = 253677972.

The previous prime is 253677967. The next prime is 253677997. The reversal of 253677973 is 379776352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169442289 + 84235684 = 13017^2 + 9178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253677973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253677913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126838986 + 126838987.

It is an arithmetic number, because the mean of its divisors is an integer number (126838987).

Almost surely, 2^253677973 is an apocalyptic number.

It is an amenable number.

253677973 is a deficient number, since it is larger than the sum of its proper divisors (1).

253677973 is an equidigital number, since it uses as much as digits as its factorization.

253677973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 49.

The square root of 253677973 is about 15927.2713607824. The cubic root of 253677973 is about 633.0348014711.

The spelling of 253677973 in words is "two hundred fifty-three million, six hundred seventy-seven thousand, nine hundred seventy-three".