253421929 has 2 divisors, whose sum is σ = 253421930. Its totient is φ = 253421928.

The previous prime is 253421911. The next prime is 253421951. The reversal of 253421929 is 929124352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191877904 + 61544025 = 13852^2 + 7845^2 .

It is a cyclic number.

It is not a de Polignac number, because 253421929 - 2⁵ = 253421897 is a prime.

It is not a weakly prime, because it can be changed into another prime (253121929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126710964 + 126710965.

It is an arithmetic number, because the mean of its divisors is an integer number (126710965).

Almost surely, 2^253421929 is an apocalyptic number.

It is an amenable number.

253421929 is a deficient number, since it is larger than the sum of its proper divisors (1).

253421929 is an equidigital number, since it uses as much as digits as its factorization.

253421929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 253421929 is about 15919.2314198896. The cubic root of 253421929 is about 632.8217500927.

The spelling of 253421929 in words is "two hundred fifty-three million, four hundred twenty-one thousand, nine hundred twenty-nine".