90248511 has 4 divisors (see below), whose sum is σ = 120331352. Its totient is φ = 60165672.

The previous prime is 90248491. The next prime is 90248519. The reversal of 90248511 is 11584209.

It is a happy number.

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

It is not a de Polignac number, because 90248511 - 2⁹ = 90247999 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 (90248519) 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, 15041416 + ... + 15041421.

It is an arithmetic number, because the mean of its divisors is an integer number (30082838).

Almost surely, 2^90248511 is an apocalyptic number.

90248511 is a deficient number, since it is larger than the sum of its proper divisors (30082841).

90248511 is a wasteful number, since it uses less digits than its factorization.

90248511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30082840.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 90248511 is about 9499.9216312557. The cubic root of 90248511 is about 448.5525690641.

It can be divided in two parts, 902485 and 11, that added together give a triangular number (902496 = T₁₃₄₃).

The spelling of 90248511 in words is "ninety million, two hundred forty-eight thousand, five hundred eleven".