251072248 has 16 divisors (see below), whose sum is σ = 538012080. Its totient is φ = 107602368.

The previous prime is 251072243. The next prime is 251072287. The reversal of 251072248 is 842270152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251072243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241661 + ... + 2241772.

It is an arithmetic number, because the mean of its divisors is an integer number (33625755).

Almost surely, 2^251072248 is an apocalyptic number.

251072248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

251072248 is an abundant number, since it is smaller than the sum of its proper divisors (286939832).

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

251072248 is a wasteful number, since it uses less digits than its factorization.

251072248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483446 (or 4483442 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 251072248 is about 15845.2594803619. The cubic root of 251072248 is about 630.8598722897.

The spelling of 251072248 in words is "two hundred fifty-one million, seventy-two thousand, two hundred forty-eight".