98690551 has 2 divisors, whose sum is σ = 98690552. Its totient is φ = 98690550.

The previous prime is 98690533. The next prime is 98690561. The reversal of 98690551 is 15509689.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98690551 - 2¹¹ = 98688503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98690498 and 98690507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98690561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49345275 + 49345276.

It is an arithmetic number, because the mean of its divisors is an integer number (49345276).

Almost surely, 2^98690551 is an apocalyptic number.

98690551 is a deficient number, since it is larger than the sum of its proper divisors (1).

98690551 is an equidigital number, since it uses as much as digits as its factorization.

98690551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 98690551 is about 9934.3118030390. The cubic root of 98690551 is about 462.1240008100.

The spelling of 98690551 in words is "ninety-eight million, six hundred ninety thousand, five hundred fifty-one".