981462557 has 2 divisors, whose sum is σ = 981462558. Its totient is φ = 981462556.

The previous prime is 981462527. The next prime is 981462563. The reversal of 981462557 is 755264189.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916515076 + 64947481 = 30274^2 + 8059^2 .

It is a cyclic number.

It is not a de Polignac number, because 981462557 - 2²⁸ = 713027101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981462527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490731278 + 490731279.

It is an arithmetic number, because the mean of its divisors is an integer number (490731279).

Almost surely, 2^981462557 is an apocalyptic number.

It is an amenable number.

981462557 is a deficient number, since it is larger than the sum of its proper divisors (1).

981462557 is an equidigital number, since it uses as much as digits as its factorization.

981462557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 981462557 is about 31328.3028107173. The cubic root of 981462557 is about 993.7822723219.

The spelling of 981462557 in words is "nine hundred eighty-one million, four hundred sixty-two thousand, five hundred fifty-seven".