250423921 has 8 divisors (see below), whose sum is σ = 282002688. Its totient is φ = 220314000.

The previous prime is 250423919. The next prime is 250423937. The reversal of 250423921 is 129324052.

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 250423921 - 2¹ = 250423919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250423921.

It is not an unprimeable number, because it can be changed into a prime (250423951) 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, 366850 + ... + 367531.

It is an arithmetic number, because the mean of its divisors is an integer number (35250336).

Almost surely, 2^250423921 is an apocalyptic number.

It is an amenable number.

250423921 is a deficient number, since it is larger than the sum of its proper divisors (31578767).

250423921 is a wasteful number, since it uses less digits than its factorization.

250423921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734423.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 250423921 is about 15824.7881818367. The cubic root of 250423921 is about 630.3163952029.

Adding to 250423921 its reverse (129324052), we get a palindrome (379747973).

The spelling of 250423921 in words is "two hundred fifty million, four hundred twenty-three thousand, nine hundred twenty-one".