102998557 has 8 divisors (see below), whose sum is σ = 105128280. Its totient is φ = 100875840.

The previous prime is 102998549. The next prime is 102998587. The reversal of 102998557 is 755899201.

It can be written as a sum of positive squares in 4 ways, for example, as 3916441 + 99082116 = 1979^2 + 9954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102998557 - 2³ = 102998549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102998507) 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, 36207 + ... + 38947.

It is an arithmetic number, because the mean of its divisors is an integer number (13141035).

Almost surely, 2^102998557 is an apocalyptic number.

It is an amenable number.

102998557 is a deficient number, since it is larger than the sum of its proper divisors (2129723).

102998557 is an equidigital number, since it uses as much as digits as its factorization.

102998557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 102998557 is about 10148.8204733358. The cubic root of 102998557 is about 468.7526257157.

The spelling of 102998557 in words is "one hundred two million, nine hundred ninety-eight thousand, five hundred fifty-seven".