2251555435501 has 4 divisors (see below), whose sum is σ = 2349449150112. Its totient is φ = 2153661720892.

The previous prime is 2251555435457. The next prime is 2251555435523. The reversal of 2251555435501 is 1055345551522.

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 2251555435501 - 2²⁹ = 2251018564589 is a prime.

It is a super-2 number, since 2×2251555435501² (a number of 26 digits) 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 (2251555435541) 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, 48946857271 + ... + 48946857316.

It is an arithmetic number, because the mean of its divisors is an integer number (587362287528).

Almost surely, 2^{2251555435501} is an apocalyptic number.

It is an amenable number.

2251555435501 is a deficient number, since it is larger than the sum of its proper divisors (97893714611).

2251555435501 is an equidigital number, since it uses as much as digits as its factorization.

2251555435501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97893714610.

The product of its (nonzero) digits is 750000, while the sum is 43.

The spelling of 2251555435501 in words is "two trillion, two hundred fifty-one billion, five hundred fifty-five million, four hundred thirty-five thousand, five hundred one".