252420551 has 2 divisors, whose sum is σ = 252420552. Its totient is φ = 252420550.

The previous prime is 252420547. The next prime is 252420577. The reversal of 252420551 is 155024252.

It is an a-pointer prime, because the next prime (252420577) can be obtained adding 252420551 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252420551 - 2² = 252420547 is a prime.

It is a super-2 number, since 2×252420551² = 127432269134287202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252420551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252420541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126210275 + 126210276.

It is an arithmetic number, because the mean of its divisors is an integer number (126210276).

Almost surely, 2^252420551 is an apocalyptic number.

252420551 is a deficient number, since it is larger than the sum of its proper divisors (1).

252420551 is an equidigital number, since it uses as much as digits as its factorization.

252420551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 252420551 is about 15887.7484559644. The cubic root of 252420551 is about 631.9871337110.

The spelling of 252420551 in words is "two hundred fifty-two million, four hundred twenty thousand, five hundred fifty-one".