251401152 has 56 divisors (see below), whose sum is σ = 675127936. Its totient is φ = 82545408.

The previous prime is 251401133. The next prime is 251401159. The reversal of 251401152 is 251104152.

251401152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251401159) 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, 3093 + ... + 22635.

It is an arithmetic number, because the mean of its divisors is an integer number (12055856).

Almost surely, 2^251401152 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 251401152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337563968).

251401152 is an abundant number, since it is smaller than the sum of its proper divisors (423726784).

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

251401152 is a wasteful number, since it uses less digits than its factorization.

251401152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19625 (or 19615 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 251401152 is about 15855.6347082039. The cubic root of 251401152 is about 631.1352270241.

The spelling of 251401152 in words is "two hundred fifty-one million, four hundred one thousand, one hundred fifty-two".