5526431621 has 4 divisors (see below), whose sum is σ = 5851515852. Its totient is φ = 5201347392.

The previous prime is 5526431591. The next prime is 5526431623. The reversal of 5526431621 is 1261346255.

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 3213302596 + 2313129025 = 56686^2 + 48095^2 .

It is a cyclic number.

It is not a de Polignac number, because 5526431621 - 2¹⁸ = 5526169477 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 (5526431623) 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, 162542090 + ... + 162542123.

It is an arithmetic number, because the mean of its divisors is an integer number (1462878963).

Almost surely, 2^5526431621 is an apocalyptic number.

It is an amenable number.

5526431621 is a deficient number, since it is larger than the sum of its proper divisors (325084231).

5526431621 is a wasteful number, since it uses less digits than its factorization.

5526431621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325084230.

The product of its digits is 43200, while the sum is 35.

The square root of 5526431621 is about 74339.9732378214. The cubic root of 5526431621 is about 1767.9973115315.

Adding to 5526431621 its reverse (1261346255), we get a palindrome (6787777876).

The spelling of 5526431621 in words is "five billion, five hundred twenty-six million, four hundred thirty-one thousand, six hundred twenty-one".