55420579 has 4 divisors (see below), whose sum is σ = 55444000. Its totient is φ = 55397160.

The previous prime is 55420577. The next prime is 55420583. The reversal of 55420579 is 97502455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55420579 - 2¹ = 55420577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55420577) 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, 7704 + ... + 13045.

It is an arithmetic number, because the mean of its divisors is an integer number (13861000).

Almost surely, 2^55420579 is an apocalyptic number.

55420579 is a deficient number, since it is larger than the sum of its proper divisors (23421).

55420579 is a wasteful number, since it uses less digits than its factorization.

55420579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23420.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 55420579 is about 7444.4999160454. The cubic root of 55420579 is about 381.2621444129.

The spelling of 55420579 in words is "fifty-five million, four hundred twenty thousand, five hundred seventy-nine".