5521660390 has 16 divisors (see below), whose sum is σ = 9943460208. Its totient is φ = 2207670496.

The previous prime is 5521660381. The next prime is 5521660399. The reversal of 5521660390 is 930661255.

It is an interprime number because it is at equal distance from previous prime (5521660381) and next prime (5521660399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521660399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100657 + ... + 145516.

It is an arithmetic number, because the mean of its divisors is an integer number (621466263).

Almost surely, 2^5521660390 is an apocalyptic number.

5521660390 is a deficient number, since it is larger than the sum of its proper divisors (4421799818).

5521660390 is a wasteful number, since it uses less digits than its factorization.

5521660390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248423.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 5521660390 is about 74307.8756929573. The cubic root of 5521660390 is about 1767.4883663434.

The spelling of 5521660390 in words is "five billion, five hundred twenty-one million, six hundred sixty thousand, three hundred ninety".