55720202 has 8 divisors (see below), whose sum is σ = 83691300. Its totient is φ = 27823104.

The previous prime is 55720183. The next prime is 55720213. The reversal of 55720202 is 20202755.

It can be written as a sum of positive squares in 2 ways, for example, as 55636681 + 83521 = 7459^2 + 289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 16577 + ... + 19652.

Almost surely, 2^55720202 is an apocalyptic number.

55720202 is a deficient number, since it is larger than the sum of its proper divisors (27971098).

55720202 is a wasteful number, since it uses less digits than its factorization.

55720202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37000.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 55720202 is about 7464.5965731579. The cubic root of 55720202 is about 381.9479886791.

Adding to 55720202 its reverse (20202755), we get a palindrome (75922957).

The spelling of 55720202 in words is "fifty-five million, seven hundred twenty thousand, two hundred two".