2144555501 has 4 divisors (see below), whose sum is σ = 2339515104. Its totient is φ = 1949595900.

The previous prime is 2144555477. The next prime is 2144555509. The reversal of 2144555501 is 1055554412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2144555501 - 2¹⁸ = 2144293357 is a prime.

It is a super-2 number, since 2×2144555501² = 9198236593738722002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144555509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97479785 + ... + 97479806.

It is an arithmetic number, because the mean of its divisors is an integer number (584878776).

Almost surely, 2^2144555501 is an apocalyptic number.

It is an amenable number.

2144555501 is a deficient number, since it is larger than the sum of its proper divisors (194959603).

2144555501 is a wasteful number, since it uses less digits than its factorization.

2144555501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194959602.

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 2144555501 is about 46309.3457198436. The cubic root of 2144555501 is about 1289.5725004132.

The spelling of 2144555501 in words is "two billion, one hundred forty-four million, five hundred fifty-five thousand, five hundred one".