253402101 has 24 divisors (see below), whose sum is σ = 381244864. Its totient is φ = 168194880.

The previous prime is 253402081. The next prime is 253402103. The reversal of 253402101 is 101204352.

253402101 is a `hidden beast` number, since 253 + 402 + 10 + 1 = 666.

It is not a de Polignac number, because 253402101 - 2¹⁰ = 253401077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253402103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56400 + ... + 60726.

Almost surely, 2^253402101 is an apocalyptic number.

It is an amenable number.

253402101 is a deficient number, since it is larger than the sum of its proper divisors (127842763).

253402101 is an equidigital number, since it uses as much as digits as its factorization.

253402101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 253402101 is about 15918.6086389483. The cubic root of 253402101 is about 632.8052454477.

Adding to 253402101 its reverse (101204352), we get a palindrome (354606453).

The spelling of 253402101 in words is "two hundred fifty-three million, four hundred two thousand, one hundred one".