55204545 has 64 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 25347840.

The previous prime is 55204529. The next prime is 55204549. The reversal of 55204545 is 54540255.

It is not a de Polignac number, because 55204545 - 2⁴ = 55204529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55204549) 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, 397086 + ... + 397224.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^55204545 is an apocalyptic number.

55204545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55204545 is a deficient number, since it is larger than the sum of its proper divisors (46401855).

55204545 is a wasteful number, since it uses less digits than its factorization.

55204545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55204545 is about 7429.9761103250. The cubic root of 55204545 is about 380.7661021931.

The spelling of 55204545 in words is "fifty-five million, two hundred four thousand, five hundred forty-five".