2150551 has 16 divisors (see below), whose sum is σ = 2528064. Its totient is φ = 1810944.

The previous prime is 2150543. The next prime is 2150567. The reversal of 2150551 is 1550512.

It is a cyclic number.

It is not a de Polignac number, because 2150551 - 2³ = 2150543 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8046 + ... + 8308.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2^2150551 is an apocalyptic number.

2150551 is a deficient number, since it is larger than the sum of its proper divisors (377513).

2150551 is a wasteful number, since it uses less digits than its factorization.

2150551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 2150551 is about 1466.4757072656. The cubic root of 2150551 is about 129.0773127884.

It can be divided in two parts, 2150 and 551, that added together give a triangular number (2701 = T₇₃).

The spelling of 2150551 in words is "two million, one hundred fifty thousand, five hundred fifty-one".