90577247 has 2 divisors, whose sum is σ = 90577248. Its totient is φ = 90577246.

The previous prime is 90577231. The next prime is 90577271. The reversal of 90577247 is 74277509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90577247 - 2⁴ = 90577231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90577217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45288623 + 45288624.

It is an arithmetic number, because the mean of its divisors is an integer number (45288624).

Almost surely, 2^90577247 is an apocalyptic number.

90577247 is a deficient number, since it is larger than the sum of its proper divisors (1).

90577247 is an equidigital number, since it uses as much as digits as its factorization.

90577247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 90577247 is about 9517.2079414080. The cubic root of 90577247 is about 449.0965363037.

The spelling of 90577247 in words is "ninety million, five hundred seventy-seven thousand, two hundred forty-seven".