55205415 has 64 divisors (see below), whose sum is σ = 103680000. Its totient is φ = 27828864.

The previous prime is 55205377. The next prime is 55205419. The reversal of 55205415 is 51450255.

It is not a de Polignac number, because 55205415 - 2¹⁴ = 55189031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205419) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 230866 + ... + 231104.

It is an arithmetic number, because the mean of its divisors is an integer number (1620000).

Almost surely, 2^55205415 is an apocalyptic number.

55205415 is a deficient number, since it is larger than the sum of its proper divisors (48474585).

55205415 is a wasteful number, since it uses less digits than its factorization.

55205415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 55205415 is about 7430.0346567159. The cubic root of 55205415 is about 380.7681024195.

The spelling of 55205415 in words is "fifty-five million, two hundred five thousand, four hundred fifteen".