55214490 has 32 divisors (see below), whose sum is σ = 138278016. Its totient is φ = 14083520.

The previous prime is 55214479. The next prime is 55214527. The reversal of 55214490 is 9441255.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 39321 + ... + 40700.

It is an arithmetic number, because the mean of its divisors is an integer number (4321188).

Almost surely, 2^55214490 is an apocalyptic number.

55214490 is an abundant number, since it is smaller than the sum of its proper divisors (83063526).

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

55214490 is a wasteful number, since it uses less digits than its factorization.

55214490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80054.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55214490 is about 7430.6453286373. The cubic root of 55214490 is about 380.7889655975.

It can be divided in two parts, 5521 and 4490, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 55214490 in words is "fifty-five million, two hundred fourteen thousand, four hundred ninety".