55903771 has 8 divisors (see below), whose sum is σ = 69698304. Its totient is φ = 43561320.

The previous prime is 55903763. The next prime is 55903831. The reversal of 55903771 is 17730955.

It is a happy number.

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

It is not a de Polignac number, because 55903771 - 2³ = 55903763 is a prime.

It is a super-2 number, since 2×55903771² = 6250463224040882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55903771.

It is not an unprimeable number, because it can be changed into a prime (55903721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362935 + ... + 363088.

It is an arithmetic number, because the mean of its divisors is an integer number (8712288).

Almost surely, 2^55903771 is an apocalyptic number.

55903771 is a deficient number, since it is larger than the sum of its proper divisors (13794533).

55903771 is a wasteful number, since it uses less digits than its factorization.

55903771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726041.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 55903771 is about 7476.8824385569. The cubic root of 55903771 is about 382.3669687036.

The spelling of 55903771 in words is "fifty-five million, nine hundred three thousand, seven hundred seventy-one".