2623551 has 16 divisors (see below), whose sum is σ = 4021248. Its totient is φ = 1490400.

The previous prime is 2623531. The next prime is 2623567. The reversal of 2623551 is 1553262.

It is not a de Polignac number, because 2623551 - 2⁶ = 2623487 is a prime.

2623551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2623531) 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, 5461 + ... + 5921.

It is an arithmetic number, because the mean of its divisors is an integer number (251328).

2^2623551 is an apocalyptic number.

2623551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2623551 is a deficient number, since it is larger than the sum of its proper divisors (1397697).

2623551 is a wasteful number, since it uses less digits than its factorization.

2623551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 1800, while the sum is 24.

The square root of 2623551 is about 1619.7379417671. The cubic root of 2623551 is about 137.9208220449.

The spelling of 2623551 in words is "two million, six hundred twenty-three thousand, five hundred fifty-one".