2251154003261 has 4 divisors (see below), whose sum is σ = 2251216022400. Its totient is φ = 2251091984124.

The previous prime is 2251154003237. The next prime is 2251154003269. The reversal of 2251154003261 is 1623004511522.

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 2251154003261 - 2³⁸ = 1976276096317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251154003269) 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, 30955091 + ... + 31027728.

It is an arithmetic number, because the mean of its divisors is an integer number (562804005600).

Almost surely, 2^{2251154003261} is an apocalyptic number.

It is an amenable number.

2251154003261 is a deficient number, since it is larger than the sum of its proper divisors (62019139).

2251154003261 is an equidigital number, since it uses as much as digits as its factorization.

2251154003261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62019138.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 2251154003261 its reverse (1623004511522), we get a palindrome (3874158514783).

The spelling of 2251154003261 in words is "two trillion, two hundred fifty-one billion, one hundred fifty-four million, three thousand, two hundred sixty-one".