55434215431 has 6 divisors (see below), whose sum is σ = 64484699640. Its totient is φ = 47515041756.

The previous prime is 55434215423. The next prime is 55434215461. The reversal of 55434215431 is 13451243455.

It is not a de Polignac number, because 55434215431 - 2³ = 55434215423 is a prime.

It is a super-2 number, since 2×55434215431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55434215461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565655211 + ... + 565655308.

It is an arithmetic number, because the mean of its divisors is an integer number (10747449940).

Almost surely, 2^55434215431 is an apocalyptic number.

55434215431 is a deficient number, since it is larger than the sum of its proper divisors (9050484209).

55434215431 is a wasteful number, since it uses less digits than its factorization.

55434215431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131310533 (or 1131310526 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 55434215431 its reverse (13451243455), we get a palindrome (68885458886).

The spelling of 55434215431 in words is "fifty-five billion, four hundred thirty-four million, two hundred fifteen thousand, four hundred thirty-one".