253381401 has 72 divisors (see below), whose sum is σ = 462887880. Its totient is φ = 132378624.

The previous prime is 253381399. The next prime is 253381417. The reversal of 253381401 is 104183352.

It is a happy number.

253381401 is a `hidden beast` number, since 253 + 3 + 8 + 1 + 401 = 666.

253381401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25401600 + 227979801 = 5040^2 + 15099^2 .

It is not a de Polignac number, because 253381401 - 2¹ = 253381399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253381421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1106355 + ... + 1106583.

Almost surely, 2^253381401 is an apocalyptic number.

253381401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

253381401 is a deficient number, since it is larger than the sum of its proper divisors (209506479).

253381401 is a wasteful number, since it uses less digits than its factorization.

253381401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 253381401 is about 15917.9584432175. The cubic root of 253381401 is about 632.7880140393.

The spelling of 253381401 in words is "two hundred fifty-three million, three hundred eighty-one thousand, four hundred one".