251850132 has 18 divisors (see below), whose sum is σ = 636621258. Its totient is φ = 83950032.

The previous prime is 251850077. The next prime is 251850133. The reversal of 251850132 is 231058152.

It is a happy number.

251850132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 233906436 + 17943696 = 15294^2 + 4236^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 251850096 and 251850105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251850133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3497883 + ... + 3497954.

Almost surely, 2^251850132 is an apocalyptic number.

It is an amenable number.

251850132 is an abundant number, since it is smaller than the sum of its proper divisors (384771126).

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

251850132 is a wasteful number, since it uses less digits than its factorization.

251850132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995847 (or 6995842 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 251850132 is about 15869.7867660533. The cubic root of 251850132 is about 631.5107206256.

It can be divided in two parts, 2518 and 50132, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 251850132 in words is "two hundred fifty-one million, eight hundred fifty thousand, one hundred thirty-two".