98490251 has 4 divisors (see below), whose sum is σ = 99465504. Its totient is φ = 97515000.

The previous prime is 98490229. The next prime is 98490269. The reversal of 98490251 is 15209489.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15209489 = 101 ⋅150589.

It is a cyclic number.

It is not a de Polignac number, because 98490251 - 2¹⁴ = 98473867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98490221) 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, 487475 + ... + 487676.

It is an arithmetic number, because the mean of its divisors is an integer number (24866376).

Almost surely, 2^98490251 is an apocalyptic number.

98490251 is a deficient number, since it is larger than the sum of its proper divisors (975253).

98490251 is a wasteful number, since it uses less digits than its factorization.

98490251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975252.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 98490251 is about 9924.2254609617. The cubic root of 98490251 is about 461.8111504285.

The spelling of 98490251 in words is "ninety-eight million, four hundred ninety thousand, two hundred fifty-one".