2251550 has 36 divisors (see below), whose sum is σ = 4876920. Its totient is φ = 771120.

The previous prime is 2251547. The next prime is 2251553. The reversal of 2251550 is 551522.

2251550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2251547) and next prime (2251553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1991 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (135470).

2^2251550 is an apocalyptic number.

2251550 is an abundant number, since it is smaller than the sum of its proper divisors (2625370).

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

2251550 is a wasteful number, since it uses less digits than its factorization.

2251550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2251550 is about 1500.5165777158. The cubic root of 2251550 is about 131.0671527973.

It can be divided in two parts, 22515 and 50, that multiplied together give a triangular number (1125750 = T₁₅₀₀).

The spelling of 2251550 in words is "two million, two hundred fifty-one thousand, five hundred fifty".