1490557 has 2 divisors, whose sum is σ = 1490558. Its totient is φ = 1490556.

The previous prime is 1490527. The next prime is 1490591. The reversal of 1490557 is 7550941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 177241 = 1146^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490557 - 2⁷ = 1490429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745278 + 745279.

It is an arithmetic number, because the mean of its divisors is an integer number (745279).

2^1490557 is an apocalyptic number.

It is an amenable number.

1490557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490557 is an equidigital number, since it uses as much as digits as its factorization.

1490557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1490557 is about 1220.8836963446. The cubic root of 1490557 is about 114.2307064893.

The spelling of 1490557 in words is "one million, four hundred ninety thousand, five hundred fifty-seven".