90273497 has 4 divisors (see below), whose sum is σ = 91167396. Its totient is φ = 89379600.

The previous prime is 90273487. The next prime is 90273509. The reversal of 90273497 is 79437209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36529936 + 53743561 = 6044^2 + 7331^2 .

It is a cyclic number.

It is not a de Polignac number, because 90273497 - 2¹⁰ = 90272473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90273467) 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, 446798 + ... + 446999.

It is an arithmetic number, because the mean of its divisors is an integer number (22791849).

Almost surely, 2^90273497 is an apocalyptic number.

It is an amenable number.

90273497 is a deficient number, since it is larger than the sum of its proper divisors (893899).

90273497 is a wasteful number, since it uses less digits than its factorization.

90273497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893898.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 90273497 is about 9501.2366037269. The cubic root of 90273497 is about 448.5939603300.

The spelling of 90273497 in words is "ninety million, two hundred seventy-three thousand, four hundred ninety-seven".