99976553 has 4 divisors (see below), whose sum is σ = 102678660. Its totient is φ = 97274448.

The previous prime is 99976549. The next prime is 99976577. The reversal of 99976553 is 35567999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35567999 = 3067 ⋅11597.

It can be written as a sum of positive squares in 2 ways, for example, as 79798489 + 20178064 = 8933^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 99976553 - 2² = 99976549 is a prime.

It is a super-2 number, since 2×99976553² = 19990622299523618, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99976495 and 99976504.

It is not an unprimeable number, because it can be changed into a prime (99976523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350998 + ... + 1351071.

It is an arithmetic number, because the mean of its divisors is an integer number (25669665).

Almost surely, 2^99976553 is an apocalyptic number.

It is an amenable number.

99976553 is a deficient number, since it is larger than the sum of its proper divisors (2702107).

99976553 is a wasteful number, since it uses less digits than its factorization.

99976553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702106.

The product of its digits is 2296350, while the sum is 53.

The square root of 99976553 is about 9998.8275812717. The cubic root of 99976553 is about 464.1226034145.

The spelling of 99976553 in words is "ninety-nine million, nine hundred seventy-six thousand, five hundred fifty-three".