490157251 has 2 divisors, whose sum is σ = 490157252. Its totient is φ = 490157250.

The previous prime is 490157237. The next prime is 490157273. The reversal of 490157251 is 152751094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490157251 - 2¹⁵ = 490124483 is a prime.

It is not a weakly prime, because it can be changed into another prime (490157201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245078625 + 245078626.

It is an arithmetic number, because the mean of its divisors is an integer number (245078626).

Almost surely, 2^490157251 is an apocalyptic number.

490157251 is a deficient number, since it is larger than the sum of its proper divisors (1).

490157251 is an equidigital number, since it uses as much as digits as its factorization.

490157251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 490157251 is about 22139.4952742830. The cubic root of 490157251 is about 788.4578423407.

The spelling of 490157251 in words is "four hundred ninety million, one hundred fifty-seven thousand, two hundred fifty-one".