55278002 has 32 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 24429888.

The previous prime is 55277987. The next prime is 55278023. The reversal of 55278002 is 20087255.

It is a super-2 number, since 2×55278002² = 6111315010224008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125699 + ... + 126137.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^55278002 is an apocalyptic number.

55278002 is a deficient number, since it is larger than the sum of its proper divisors (37861198).

55278002 is a wasteful number, since it uses less digits than its factorization.

55278002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 55278002 is about 7434.9177534119. The cubic root of 55278002 is about 380.9349140111.

The spelling of 55278002 in words is "fifty-five million, two hundred seventy-eight thousand, two".