251427484 has 96 divisors (see below), whose sum is σ = 599961600. Its totient is φ = 89164800.

The previous prime is 251427461. The next prime is 251427499. The reversal of 251427484 is 484724152.

251427484 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161542 + ... + 163090.

It is an arithmetic number, because the mean of its divisors is an integer number (6249600).

Almost surely, 2^251427484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251427484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299980800).

251427484 is an abundant number, since it is smaller than the sum of its proper divisors (348534116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251427484 is a wasteful number, since it uses less digits than its factorization.

251427484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its digits is 71680, while the sum is 37.

The square root of 251427484 is about 15856.4650537249. The cubic root of 251427484 is about 631.1572614930.

The spelling of 251427484 in words is "two hundred fifty-one million, four hundred twenty-seven thousand, four hundred eighty-four".