253307461 has 4 divisors (see below), whose sum is σ = 276335424. Its totient is φ = 230279500.

The previous prime is 253307459. The next prime is 253307477. The reversal of 253307461 is 164703352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253307461 - 2¹ = 253307459 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253307401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11513965 + ... + 11513986.

It is an arithmetic number, because the mean of its divisors is an integer number (69083856).

Almost surely, 2^253307461 is an apocalyptic number.

It is an amenable number.

253307461 is a deficient number, since it is larger than the sum of its proper divisors (23027963).

253307461 is a wasteful number, since it uses less digits than its factorization.

253307461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23027962.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 253307461 is about 15915.6357397372. The cubic root of 253307461 is about 632.7264561172.

The spelling of 253307461 in words is "two hundred fifty-three million, three hundred seven thousand, four hundred sixty-one".