253400413 has 6 divisors (see below), whose sum is σ = 294771966. Its totient is φ = 217200312.

The previous prime is 253400401. The next prime is 253400429. The reversal of 253400413 is 314004352.

It can be written as a sum of positive squares in only one way, i.e., 253382724 + 17689 = 15918^2 + 133^2 .

It is a de Polignac number, because none of the positive numbers 2^k-253400413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253400713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2585670 + ... + 2585767.

It is an arithmetic number, because the mean of its divisors is an integer number (49128661).

Almost surely, 2^253400413 is an apocalyptic number.

It is an amenable number.

253400413 is a deficient number, since it is larger than the sum of its proper divisors (41371553).

253400413 is an equidigital number, since it uses as much as digits as its factorization.

253400413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171451 (or 5171444 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 253400413 is about 15918.5556191509. Note that the first 3 decimals coincide. The cubic root of 253400413 is about 632.8038403322.

Adding to 253400413 its reverse (314004352), we get a palindrome (567404765).

The spelling of 253400413 in words is "two hundred fifty-three million, four hundred thousand, four hundred thirteen".