98992551 has 16 divisors (see below), whose sum is σ = 151387904. Its totient is φ = 56363904.

The previous prime is 98992541. The next prime is 98992559. The reversal of 98992551 is 15529989.

It is a happy number.

It is not a de Polignac number, because 98992551 - 2⁵ = 98992519 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is the 9950-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98992551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98992559) by changing a digit.

It is a nontrivial repunit in base 9949.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2386 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (9461744).

Almost surely, 2^98992551 is an apocalyptic number.

98992551 is a deficient number, since it is larger than the sum of its proper divisors (52395353).

98992551 is a wasteful number, since it uses less digits than its factorization.

98992551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16950.

The product of its digits is 291600, while the sum is 48.

The square root of 98992551 is about 9949.5000376903. The cubic root of 98992551 is about 462.5948980824.

The spelling of 98992551 in words is "ninety-eight million, nine hundred ninety-two thousand, five hundred fifty-one".