252551506 has 8 divisors (see below), whose sum is σ = 385248240. Its totient is φ = 124135428.

The previous prime is 252551503. The next prime is 252551527. The reversal of 252551506 is 605155252.

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 (252551503) 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, 1070016 + ... + 1070251.

It is an arithmetic number, because the mean of its divisors is an integer number (48156030).

Almost surely, 2^252551506 is an apocalyptic number.

252551506 is a deficient number, since it is larger than the sum of its proper divisors (132696734).

252551506 is a wasteful number, since it uses less digits than its factorization.

252551506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140328.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 252551506 is about 15891.8691789229. The cubic root of 252551506 is about 632.0964058056.

The spelling of 252551506 in words is "two hundred fifty-two million, five hundred fifty-one thousand, five hundred six".