55263890 has 32 divisors (see below), whose sum is σ = 109843776. Its totient is φ = 19850560.

The previous prime is 55263877. The next prime is 55263899. The reversal of 55263890 is 9836255.

It is not an unprimeable number, because it can be changed into a prime (55263899) by changing a digit.

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, 6104 + ... + 12156.

It is an arithmetic number, because the mean of its divisors is an integer number (3432618).

Almost surely, 2^55263890 is an apocalyptic number.

55263890 is a deficient number, since it is larger than the sum of its proper divisors (54579886).

55263890 is a wasteful number, since it uses less digits than its factorization.

55263890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 55263890 is about 7433.9686574534. The cubic root of 55263890 is about 380.9024947796.

The spelling of 55263890 in words is "fifty-five million, two hundred sixty-three thousand, eight hundred ninety".