55063770 has 64 divisors (see below), whose sum is σ = 137237760. Its totient is φ = 14128128.

The previous prime is 55063759. The next prime is 55063787. The reversal of 55063770 is 7736055.

It is a happy number.

It is a super-2 number, since 2×55063770² = 6064037533225800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125211 + ... + 125649.

It is an arithmetic number, because the mean of its divisors is an integer number (2144340).

Almost surely, 2^55063770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55063770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68618880).

55063770 is an abundant number, since it is smaller than the sum of its proper divisors (82173990).

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

55063770 is a wasteful number, since it uses less digits than its factorization.

55063770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 55063770 is about 7420.4966141088. The cubic root of 55063770 is about 380.4421676584.

The spelling of 55063770 in words is "fifty-five million, sixty-three thousand, seven hundred seventy".