55006431 has 16 divisors (see below), whose sum is σ = 76228608. Its totient is φ = 35244000.

The previous prime is 55006423. The next prime is 55006433. The reversal of 55006431 is 13460055.

It is not a de Polignac number, because 55006431 - 2³ = 55006423 is a prime.

It is a super-2 number, since 2×55006431² = 6051414902715522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55006433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12085 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (4764288).

Almost surely, 2^55006431 is an apocalyptic number.

55006431 is a deficient number, since it is larger than the sum of its proper divisors (21222177).

55006431 is a wasteful number, since it uses less digits than its factorization.

55006431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 55006431 is about 7416.6320523537. The cubic root of 55006431 is about 380.3100677938.

Adding to 55006431 its reverse (13460055), we get a palindrome (68466486).

The spelling of 55006431 in words is "fifty-five million, six thousand, four hundred thirty-one".