253071961 has 4 divisors (see below), whose sum is σ = 253286352. Its totient is φ = 252857572.

The previous prime is 253071919. The next prime is 253071977. The reversal of 253071961 is 169170352.

253071961 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253071961 - 2¹¹ = 253069913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253071991) 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, 105415 + ... + 107788.

It is an arithmetic number, because the mean of its divisors is an integer number (63321588).

Almost surely, 2^253071961 is an apocalyptic number.

It is an amenable number.

253071961 is a deficient number, since it is larger than the sum of its proper divisors (214391).

253071961 is a wasteful number, since it uses less digits than its factorization.

253071961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214390.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 253071961 is about 15908.2356344128. The cubic root of 253071961 is about 632.5303133467.

The spelling of 253071961 in words is "two hundred fifty-three million, seventy-one thousand, nine hundred sixty-one".