253915149 has 4 divisors (see below), whose sum is σ = 338553536. Its totient is φ = 169276764.

The previous prime is 253915133. The next prime is 253915153. The reversal of 253915149 is 941519352.

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 not a de Polignac number, because 253915149 - 2⁴ = 253915133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253915169) 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, 42319189 + ... + 42319194.

It is an arithmetic number, because the mean of its divisors is an integer number (84638384).

Almost surely, 2^253915149 is an apocalyptic number.

It is an amenable number.

253915149 is a deficient number, since it is larger than the sum of its proper divisors (84638387).

253915149 is an equidigital number, since it uses as much as digits as its factorization.

253915149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84638386.

The product of its digits is 48600, while the sum is 39.

The square root of 253915149 is about 15934.7152155286. The cubic root of 253915149 is about 633.2320251314.

The spelling of 253915149 in words is "two hundred fifty-three million, nine hundred fifteen thousand, one hundred forty-nine".