55220234501 has 4 divisors (see below), whose sum is σ = 56262125772. Its totient is φ = 54178343232.

The previous prime is 55220234477. The next prime is 55220234519. The reversal of 55220234501 is 10543202255.

55220234501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 32193689476 + 23026545025 = 179426^2 + 151745^2 .

It is a cyclic number.

It is not a de Polignac number, because 55220234501 - 2⁶ = 55220234437 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 (55220234521) 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, 520945556 + ... + 520945661.

It is an arithmetic number, because the mean of its divisors is an integer number (14065531443).

Almost surely, 2^55220234501 is an apocalyptic number.

It is an amenable number.

55220234501 is a deficient number, since it is larger than the sum of its proper divisors (1041891271).

55220234501 is a wasteful number, since it uses less digits than its factorization.

55220234501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041891270.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 55220234501 its reverse (10543202255), we get a palindrome (65763436756).

The spelling of 55220234501 in words is "fifty-five billion, two hundred twenty million, two hundred thirty-four thousand, five hundred one".