251480363 has 2 divisors, whose sum is σ = 251480364. Its totient is φ = 251480362.

The previous prime is 251480353. The next prime is 251480381. The reversal of 251480363 is 363084152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251480363 - 2¹⁰ = 251479339 is a prime.

It is a super-2 number, since 2×251480363² = 126484745949223538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (251480323) 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, 125740181 + 125740182.

It is an arithmetic number, because the mean of its divisors is an integer number (125740182).

Almost surely, 2^251480363 is an apocalyptic number.

251480363 is a deficient number, since it is larger than the sum of its proper divisors (1).

251480363 is an equidigital number, since it uses as much as digits as its factorization.

251480363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 251480363 is about 15858.1323931918. The cubic root of 251480363 is about 631.2015056953.

The spelling of 251480363 in words is "two hundred fifty-one million, four hundred eighty thousand, three hundred sixty-three".