98572261 has 2 divisors, whose sum is σ = 98572262. Its totient is φ = 98572260.

The previous prime is 98572259. The next prime is 98572277. The reversal of 98572261 is 16227589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90364036 + 8208225 = 9506^2 + 2865^2 .

It is a cyclic number.

It is not a de Polignac number, because 98572261 - 2¹ = 98572259 is a prime.

Together with 98572259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98552261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49286130 + 49286131.

It is an arithmetic number, because the mean of its divisors is an integer number (49286131).

Almost surely, 2^98572261 is an apocalyptic number.

It is an amenable number.

98572261 is a deficient number, since it is larger than the sum of its proper divisors (1).

98572261 is an equidigital number, since it uses as much as digits as its factorization.

98572261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 98572261 is about 9928.3564097992. The cubic root of 98572261 is about 461.9392938233.

The spelling of 98572261 in words is "ninety-eight million, five hundred seventy-two thousand, two hundred sixty-one".