251050530 has 16 divisors (see below), whose sum is σ = 602521344. Its totient is φ = 66946800.

The previous prime is 251050529. The next prime is 251050531. The reversal of 251050530 is 35050152.

It is an interprime number because it is at equal distance from previous prime (251050529) and next prime (251050531).

It is a super-2 number, since 2×251050530² = 126052737226561800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251050497 and 251050506.

It is not an unprimeable number, because it can be changed into a prime (251050531) 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, 4184146 + ... + 4184205.

It is an arithmetic number, because the mean of its divisors is an integer number (37657584).

Almost surely, 2^251050530 is an apocalyptic number.

251050530 is an abundant number, since it is smaller than the sum of its proper divisors (351470814).

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

251050530 is a wasteful number, since it uses less digits than its factorization.

251050530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8368361.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 251050530 is about 15844.5741501626. The cubic root of 251050530 is about 630.8416817624.

The spelling of 251050530 in words is "two hundred fifty-one million, fifty thousand, five hundred thirty".