250513421 has 8 divisors (see below), whose sum is σ = 258624504. Its totient is φ = 242472960.

The previous prime is 250513391. The next prime is 250513433. The reversal of 250513421 is 124315052.

250513421 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 4 ways, for example, as 101404900 + 149108521 = 10070^2 + 12211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250513421 - 2⁶ = 250513357 is a prime.

It is a super-2 number, since 2×250513421² = 125513948202246482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250513441) 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, 10400 + ... + 24681.

It is an arithmetic number, because the mean of its divisors is an integer number (32328063).

Almost surely, 2^250513421 is an apocalyptic number.

It is an amenable number.

250513421 is a deficient number, since it is larger than the sum of its proper divisors (8111083).

250513421 is a wasteful number, since it uses less digits than its factorization.

250513421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35311.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 250513421 is about 15827.6157711767. The cubic root of 250513421 is about 630.3914766859.

Adding to 250513421 its reverse (124315052), we get a palindrome (374828473).

The spelling of 250513421 in words is "two hundred fifty million, five hundred thirteen thousand, four hundred twenty-one".