253674761 has 4 divisors (see below), whose sum is σ = 254989332. Its totient is φ = 252360192.

The previous prime is 253674737. The next prime is 253674763. The reversal of 253674761 is 167476352.

253674761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80910025 + 172764736 = 8995^2 + 13144^2 .

It is a cyclic number.

It is not a de Polignac number, because 253674761 - 2¹⁸ = 253412617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253674763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656996 + ... + 657381.

It is an arithmetic number, because the mean of its divisors is an integer number (63747333).

Almost surely, 2^253674761 is an apocalyptic number.

It is an amenable number.

253674761 is a deficient number, since it is larger than the sum of its proper divisors (1314571).

253674761 is a wasteful number, since it uses less digits than its factorization.

253674761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314570.

The product of its digits is 211680, while the sum is 41.

The square root of 253674761 is about 15927.1705271213. The cubic root of 253674761 is about 633.0321296896.

The spelling of 253674761 in words is "two hundred fifty-three million, six hundred seventy-four thousand, seven hundred sixty-one".