55215453541 has 4 divisors (see below), whose sum is σ = 55223893792. Its totient is φ = 55207013292.

The previous prime is 55215453487. The next prime is 55215453551. The reversal of 55215453541 is 14535451255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55215453541 - 2¹⁷ = 55215322469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55215453494 and 55215453503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215453551) 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, 4210305 + ... + 4223398.

It is an arithmetic number, because the mean of its divisors is an integer number (13805973448).

Almost surely, 2^55215453541 is an apocalyptic number.

It is an amenable number.

55215453541 is a deficient number, since it is larger than the sum of its proper divisors (8440251).

55215453541 is an equidigital number, since it uses as much as digits as its factorization.

55215453541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440250.

The product of its digits is 300000, while the sum is 40.

The spelling of 55215453541 in words is "fifty-five billion, two hundred fifteen million, four hundred fifty-three thousand, five hundred forty-one".