2126005553 has 4 divisors (see below), whose sum is σ = 2429720640. Its totient is φ = 1822290468.

The previous prime is 2126005523. The next prime is 2126005559. The reversal of 2126005553 is 3555006212.

It is a happy number.

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 2126005553 - 2²⁴ = 2109228337 is a prime.

It is a super-2 number, since 2×2126005553² = 9039799222773671618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2126005559) 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, 151857533 + ... + 151857546.

It is an arithmetic number, because the mean of its divisors is an integer number (607430160).

Almost surely, 2^2126005553 is an apocalyptic number.

It is an amenable number.

2126005553 is a deficient number, since it is larger than the sum of its proper divisors (303715087).

2126005553 is an equidigital number, since it uses as much as digits as its factorization.

2126005553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303715086.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2126005553 is about 46108.6277501294. The cubic root of 2126005553 is about 1285.8435523640.

The spelling of 2126005553 in words is "two billion, one hundred twenty-six million, five thousand, five hundred fifty-three".