253402071 has 16 divisors (see below), whose sum is σ = 368247936. Its totient is φ = 154058976.

The previous prime is 253402067. The next prime is 253402081. The reversal of 253402071 is 170204352.

It is not a de Polignac number, because 253402071 - 2² = 253402067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253402021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35905 + ... + 42378.

It is an arithmetic number, because the mean of its divisors is an integer number (23015496).

Almost surely, 2^253402071 is an apocalyptic number.

253402071 is a deficient number, since it is larger than the sum of its proper divisors (114845865).

253402071 is a wasteful number, since it uses less digits than its factorization.

253402071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78382.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 253402071 is about 15918.6076966549. The cubic root of 253402071 is about 632.8052204753.

The spelling of 253402071 in words is "two hundred fifty-three million, four hundred two thousand, seventy-one".