2452655821 has 16 divisors (see below), whose sum is σ = 3088142208. Its totient is φ = 1892232000.

The previous prime is 2452655809. The next prime is 2452655851. The reversal of 2452655821 is 1285562542.

It is a cyclic number.

It is not a de Polignac number, because 2452655821 - 2¹⁵ = 2452623053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2452655851) 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, 149910 + ... + 165463.

It is an arithmetic number, because the mean of its divisors is an integer number (193008888).

Almost surely, 2^2452655821 is an apocalyptic number.

It is an amenable number.

2452655821 is a deficient number, since it is larger than the sum of its proper divisors (635486387).

2452655821 is a wasteful number, since it uses less digits than its factorization.

2452655821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315492.

The product of its digits is 192000, while the sum is 40.

The square root of 2452655821 is about 49524.2952600034. The cubic root of 2452655821 is about 1348.5866912088.

The spelling of 2452655821 in words is "two billion, four hundred fifty-two million, six hundred fifty-five thousand, eight hundred twenty-one".