7521090 has 16 divisors (see below), whose sum is σ = 18050688. Its totient is φ = 2005616.

The previous prime is 7521079. The next prime is 7521113. The reversal of 7521090 is 901257.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7521090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125322 + ... + 125381.

It is an arithmetic number, because the mean of its divisors is an integer number (1128168).

Almost surely, 2^7521090 is an apocalyptic number.

7521090 is an abundant number, since it is smaller than the sum of its proper divisors (10529598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7521090 is a wasteful number, since it uses less digits than its factorization.

7521090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250713.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 7521090 is about 2742.4605740101. The cubic root of 7521090 is about 195.9266871445.

The spelling of 7521090 in words is "seven million, five hundred twenty-one thousand, ninety".