251023046 has 4 divisors (see below), whose sum is σ = 376534572. Its totient is φ = 125511522.

The previous prime is 251023039. The next prime is 251023049. The reversal of 251023046 is 640320152.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251023049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62755760 + ... + 62755763.

It is an arithmetic number, because the mean of its divisors is an integer number (94133643).

Almost surely, 2^251023046 is an apocalyptic number.

251023046 is a deficient number, since it is larger than the sum of its proper divisors (125511526).

251023046 is a wasteful number, since it uses less digits than its factorization.

251023046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125511525.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 251023046 is about 15843.7068263712. The cubic root of 251023046 is about 630.8186602541.

Adding to 251023046 its reverse (640320152), we get a palindrome (891343198).

The spelling of 251023046 in words is "two hundred fifty-one million, twenty-three thousand, forty-six".