5521400138 has 4 divisors (see below), whose sum is σ = 8282100210. Its totient is φ = 2760700068.

The previous prime is 5521400107. The next prime is 5521400141. The reversal of 5521400138 is 8310041255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8310041255 = 5 ⋅1662008251.

It can be written as a sum of positive squares in only one way, i.e., 3921640129 + 1599760009 = 62623^2 + 39997^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5521400138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1380350033 + ... + 1380350036.

Almost surely, 2^5521400138 is an apocalyptic number.

5521400138 is a deficient number, since it is larger than the sum of its proper divisors (2760700072).

5521400138 is a wasteful number, since it uses less digits than its factorization.

5521400138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760700071.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5521400138 is about 74306.1244985903. The cubic root of 5521400138 is about 1767.4605969421.

The spelling of 5521400138 in words is "five billion, five hundred twenty-one million, four hundred thousand, one hundred thirty-eight".