252420555 has 32 divisors (see below), whose sum is σ = 410342400. Its totient is φ = 132485760.

The previous prime is 252420551. The next prime is 252420577. The reversal of 252420555 is 555024252.

It is not a de Polignac number, because 252420555 - 2² = 252420551 is a prime.

It is a super-2 number, since 2×252420555² = 127432273173016050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252420551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307045 + ... + 307865.

It is an arithmetic number, because the mean of its divisors is an integer number (12823200).

Almost surely, 2^252420555 is an apocalyptic number.

252420555 is a deficient number, since it is larger than the sum of its proper divisors (157921845).

252420555 is a wasteful number, since it uses less digits than its factorization.

252420555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 252420555 is about 15887.7485818476. The cubic root of 252420555 is about 631.9871370493.

The spelling of 252420555 in words is "two hundred fifty-two million, four hundred twenty thousand, five hundred fifty-five".