2455531 has 16 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 2073600.

The previous prime is 2455529. The next prime is 2455547. The reversal of 2455531 is 1355542.

It is a 10-Lehmer number, since φ(2455531) divides (2455531-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 2455531 - 2¹ = 2455529 is a prime.

It is a super-2 number, since 2×2455531² = 12059264983922, which contains 22 as substring.

2455531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2455496 and 2455505.

It is not an unprimeable number, because it can be changed into a prime (2455511) 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, 8926 + ... + 9196.

It is an arithmetic number, because the mean of its divisors is an integer number (179928).

2^2455531 is an apocalyptic number.

2455531 is a deficient number, since it is larger than the sum of its proper divisors (423317).

2455531 is a wasteful number, since it uses less digits than its factorization.

2455531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 3000, while the sum is 25.

The square root of 2455531 is about 1567.0134013467. The cubic root of 2455531 is about 134.9113455428.

It can be divided in two parts, 245 and 5531, that added together give a square (5776 = 76²).

The spelling of 2455531 in words is "two million, four hundred fifty-five thousand, five hundred thirty-one".