253857122 has 8 divisors (see below), whose sum is σ = 389641296. Its totient is φ = 123976692.

The previous prime is 253857101. The next prime is 253857127. The reversal of 253857122 is 221758352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (253857127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1475828 + ... + 1475999.

It is an arithmetic number, because the mean of its divisors is an integer number (48705162).

Almost surely, 2^253857122 is an apocalyptic number.

253857122 is a deficient number, since it is larger than the sum of its proper divisors (135784174).

253857122 is a wasteful number, since it uses less digits than its factorization.

253857122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951872.

The product of its digits is 33600, while the sum is 35.

The square root of 253857122 is about 15932.8943384433. The cubic root of 253857122 is about 633.1837841418.

It can be divided in two parts, 253 and 857122, that added together give a cube (857375 = 95³).

The spelling of 253857122 in words is "two hundred fifty-three million, eight hundred fifty-seven thousand, one hundred twenty-two".