55415503 has 16 divisors (see below), whose sum is σ = 65493792. Its totient is φ = 46224000.

The previous prime is 55415501. The next prime is 55415537. The reversal of 55415503 is 30551455.

It is a cyclic number.

It is not a de Polignac number, because 55415503 - 2¹ = 55415501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24813 + ... + 26953.

It is an arithmetic number, because the mean of its divisors is an integer number (4093362).

Almost surely, 2^55415503 is an apocalyptic number.

55415503 is a deficient number, since it is larger than the sum of its proper divisors (10078289).

55415503 is a wasteful number, since it uses less digits than its factorization.

55415503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55415503 is about 7444.1589854059. The cubic root of 55415503 is about 381.2505040574.

Adding to 55415503 its reverse (30551455), we get a palindrome (85966958).

The spelling of 55415503 in words is "fifty-five million, four hundred fifteen thousand, five hundred three".