81052498 has 16 divisors (see below), whose sum is σ = 129394584. Its totient is φ = 37945600.

The previous prime is 81052493. The next prime is 81052511. The reversal of 81052498 is 89425018.

It can be written as a sum of positive squares in 4 ways, for example, as 65076489 + 15976009 = 8067^2 + 3997^2 .

It is not an unprimeable number, because it can be changed into a prime (81052493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 12748.

Almost surely, 2^81052498 is an apocalyptic number.

81052498 is a deficient number, since it is larger than the sum of its proper divisors (48342086).

81052498 is a wasteful number, since it uses less digits than its factorization.

81052498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12317.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 81052498 is about 9002.9160831366. The cubic root of 81052498 is about 432.7683264826.

The spelling of 81052498 in words is "eighty-one million, fifty-two thousand, four hundred ninety-eight".