55054780 has 48 divisors (see below), whose sum is σ = 132773760. Its totient is φ = 18964800.

The previous prime is 55054697. The next prime is 55054819. The reversal of 55054780 is 8745055.

55054780 = T₃₃₇ + T₃₃₈ + ... + T₇₁₆.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406 + ... + 10765.

It is an arithmetic number, because the mean of its divisors is an integer number (2766120).

Almost surely, 2^55054780 is an apocalyptic number.

It is an amenable number.

55054780 is an abundant number, since it is smaller than the sum of its proper divisors (77718980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55054780 is a wasteful number, since it uses less digits than its factorization.

55054780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210 (or 13208 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 55054780 is about 7419.8908347765. The cubic root of 55054780 is about 380.4214622034.

The spelling of 55054780 in words is "fifty-five million, fifty-four thousand, seven hundred eighty".