55258005 has 16 divisors (see below), whose sum is σ = 96450624. Its totient is φ = 26791680.

The previous prime is 55258003. The next prime is 55258013. The reversal of 55258005 is 50085255.

It is not a de Polignac number, because 55258005 - 2¹ = 55258003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55258003) 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, 167284 + ... + 167613.

It is an arithmetic number, because the mean of its divisors is an integer number (6028164).

Almost surely, 2^55258005 is an apocalyptic number.

55258005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55258005 is a deficient number, since it is larger than the sum of its proper divisors (41192619).

55258005 is a wasteful number, since it uses less digits than its factorization.

55258005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334916.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 55258005 is about 7433.5728287278. The cubic root of 55258005 is about 380.8889736494. Note that the first 3 decimals are identical.

It can be divided in two parts, 5525 and 8005, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 55258005 in words is "fifty-five million, two hundred fifty-eight thousand, five".