91542901 has 2 divisors, whose sum is σ = 91542902. Its totient is φ = 91542900.

The previous prime is 91542881. The next prime is 91542911. The reversal of 91542901 is 10924519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 21150801 = 8390^2 + 4599^2 .

It is a cyclic number.

It is not a de Polignac number, because 91542901 - 2⁹ = 91542389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91542911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45771450 + 45771451.

It is an arithmetic number, because the mean of its divisors is an integer number (45771451).

Almost surely, 2^91542901 is an apocalyptic number.

It is an amenable number.

91542901 is a deficient number, since it is larger than the sum of its proper divisors (1).

91542901 is an equidigital number, since it uses as much as digits as its factorization.

91542901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 91542901 is about 9567.8054432560. The cubic root of 91542901 is about 450.6868539731.

The spelling of 91542901 in words is "ninety-one million, five hundred forty-two thousand, nine hundred one".