90947501 has 4 divisors (see below), whose sum is σ = 96297372. Its totient is φ = 85597632.

The previous prime is 90947489. The next prime is 90947513. The reversal of 90947501 is 10574909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10574909 = 127 ⋅83267.

It is an interprime number because it is at equal distance from previous prime (90947489) and next prime (90947513).

It can be written as a sum of positive squares in 2 ways, for example, as 57365476 + 33582025 = 7574^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 90947501 - 2¹⁰ = 90946477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90947551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2674910 + ... + 2674943.

It is an arithmetic number, because the mean of its divisors is an integer number (24074343).

Almost surely, 2^90947501 is an apocalyptic number.

It is an amenable number.

90947501 is a deficient number, since it is larger than the sum of its proper divisors (5349871).

90947501 is a wasteful number, since it uses less digits than its factorization.

90947501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349870.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 90947501 is about 9536.6399219012. The cubic root of 90947501 is about 449.7076306621.

The spelling of 90947501 in words is "ninety million, nine hundred forty-seven thousand, five hundred one".