55415413 has 4 divisors (see below), whose sum is σ = 55451628. Its totient is φ = 55379200.

The previous prime is 55415411. The next prime is 55415417. The reversal of 55415413 is 31451455.

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 43533604 + 11881809 = 6598^2 + 3447^2 .

It is a cyclic number.

It is not a de Polignac number, because 55415413 - 2¹ = 55415411 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 (55415411) 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, 15706 + ... + 18907.

It is an arithmetic number, because the mean of its divisors is an integer number (13862907).

Almost surely, 2^55415413 is an apocalyptic number.

It is an amenable number.

55415413 is a deficient number, since it is larger than the sum of its proper divisors (36215).

55415413 is a wasteful number, since it uses less digits than its factorization.

55415413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36214.

The product of its digits is 6000, while the sum is 28.

The square root of 55415413 is about 7444.1529403956. The cubic root of 55415413 is about 381.2502976617.

Adding to 55415413 its reverse (31451455), we get a palindrome (86866868).

The spelling of 55415413 in words is "fifty-five million, four hundred fifteen thousand, four hundred thirteen".