2055661631 has 8 divisors (see below), whose sum is σ = 2092601184. Its totient is φ = 2018826720.

The previous prime is 2055661613. The next prime is 2055661667. The reversal of 2055661631 is 1361665502.

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

It is a de Polignac number, because none of the positive numbers 2^k-2055661631 is a prime.

It is a super-2 number, since 2×2055661631² = 8451489482331160322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2055661591 and 2055661600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055661681) 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, 14030 + ... + 65636.

It is an arithmetic number, because the mean of its divisors is an integer number (261575148).

Almost surely, 2^2055661631 is an apocalyptic number.

2055661631 is a deficient number, since it is larger than the sum of its proper divisors (36939553).

2055661631 is an equidigital number, since it uses as much as digits as its factorization.

2055661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52321.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2055661631 is about 45339.4048372936. The cubic root of 2055661631 is about 1271.5024752089.

The spelling of 2055661631 in words is "two billion, fifty-five million, six hundred sixty-one thousand, six hundred thirty-one".