251987483 has 8 divisors (see below), whose sum is σ = 275016000. Its totient is φ = 228979080.

The previous prime is 251987377. The next prime is 251987507. The reversal of 251987483 is 384789152.

It is a happy number.

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

It is not a de Polignac number, because 251987483 - 2⁸ = 251987227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251987083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35216 + ... + 41762.

It is an arithmetic number, because the mean of its divisors is an integer number (34377000).

Almost surely, 2^251987483 is an apocalyptic number.

251987483 is a deficient number, since it is larger than the sum of its proper divisors (23028517).

251987483 is a wasteful number, since it uses less digits than its factorization.

251987483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057.

The product of its digits is 483840, while the sum is 47.

The square root of 251987483 is about 15874.1136130494. The cubic root of 251987483 is about 631.6255016728.

The spelling of 251987483 in words is "two hundred fifty-one million, nine hundred eighty-seven thousand, four hundred eighty-three".