2251345401550 has 48 divisors (see below), whose sum is σ = 4788038403072. Its totient is φ = 771515445600.

The previous prime is 2251345401533. The next prime is 2251345401553. The reversal of 2251345401550 is 551045431522.

It is a super-4 number, since 4×2251345401550⁴ (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251345401553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 836946 + ... + 2281045.

It is an arithmetic number, because the mean of its divisors is an integer number (99750800064).

Almost surely, 2^{2251345401550} is an apocalyptic number.

2251345401550 is an abundant number, since it is smaller than the sum of its proper divisors (2536693001522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251345401550 is a wasteful number, since it uses less digits than its factorization.

2251345401550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120073 (or 3120068 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 2251345401550 in words is "two trillion, two hundred fifty-one billion, three hundred forty-five million, four hundred one thousand, five hundred fifty".