55415523 has 8 divisors (see below), whose sum is σ = 73962000. Its totient is φ = 36906368.

The previous prime is 55415501. The next prime is 55415537. The reversal of 55415523 is 32551455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55415523 - 2²⁰ = 54366947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55415593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5658 + ... + 11951.

It is an arithmetic number, because the mean of its divisors is an integer number (9245250).

Almost surely, 2^55415523 is an apocalyptic number.

55415523 is a deficient number, since it is larger than the sum of its proper divisors (18546477).

55415523 is a wasteful number, since it uses less digits than its factorization.

55415523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18661.

The product of its digits is 15000, while the sum is 30.

The square root of 55415523 is about 7444.1603287409. The cubic root of 55415523 is about 381.2505499231.

Adding to 55415523 its reverse (32551455), we get a palindrome (87966978).

The spelling of 55415523 in words is "fifty-five million, four hundred fifteen thousand, five hundred twenty-three".