55353431 has 16 divisors (see below), whose sum is σ = 65759040. Its totient is φ = 45588480.

The previous prime is 55353409. The next prime is 55353437. The reversal of 55353431 is 13435355.

It is not a de Polignac number, because 55353431 - 2¹⁸ = 55091287 is a prime.

It is a super-2 number, since 2×55353431² = 6128004646943522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55353394 and 55353403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55353437) 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, 51641 + ... + 52701.

It is an arithmetic number, because the mean of its divisors is an integer number (4109940).

Almost surely, 2^55353431 is an apocalyptic number.

55353431 is a deficient number, since it is larger than the sum of its proper divisors (10405609).

55353431 is a wasteful number, since it uses less digits than its factorization.

55353431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354.

The product of its digits is 13500, while the sum is 29.

The square root of 55353431 is about 7439.9886424644. The cubic root of 55353431 is about 381.1081021339.

Adding to 55353431 its reverse (13435355), we get a palindrome (68788786).

The spelling of 55353431 in words is "fifty-five million, three hundred fifty-three thousand, four hundred thirty-one".