55323015 has 64 divisors (see below), whose sum is σ = 103721472. Its totient is φ = 25090560.

The previous prime is 55323013. The next prime is 55323017. The reversal of 55323015 is 51032355.

It is an interprime number because it is at equal distance from previous prime (55323013) and next prime (55323017).

It is not a de Polignac number, because 55323015 - 2¹ = 55323013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55323011) 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, 339324 + ... + 339486.

It is an arithmetic number, because the mean of its divisors is an integer number (1620648).

Almost surely, 2^55323015 is an apocalyptic number.

55323015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55323015 is a deficient number, since it is larger than the sum of its proper divisors (48398457).

55323015 is a wasteful number, since it uses less digits than its factorization.

55323015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 55323015 is about 7437.9442724452. The cubic root of 55323015 is about 381.0382846739.

The spelling of 55323015 in words is "fifty-five million, three hundred twenty-three thousand, fifteen".