2457655805 has 12 divisors (see below), whose sum is σ = 3241669116. Its totient is φ = 1787385600.

The previous prime is 2457655799. The next prime is 2457655831. The reversal of 2457655805 is 5085567542.

It can be written as a sum of positive squares in 2 ways, for example, as 1740808729 + 716847076 = 41723^2 + 26774^2 .

It is not a de Polignac number, because 2457655805 - 2¹⁸ = 2457393661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2457655805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2030516 + ... + 2031725.

It is an arithmetic number, because the mean of its divisors is an integer number (270139093).

Almost surely, 2^2457655805 is an apocalyptic number.

It is an amenable number.

2457655805 is a deficient number, since it is larger than the sum of its proper divisors (784013311).

2457655805 is a wasteful number, since it uses less digits than its factorization.

2457655805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062268 (or 4062257 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 47.

The square root of 2457655805 is about 49574.7496715818. The cubic root of 2457655805 is about 1349.5024787631.

The spelling of 2457655805 in words is "two billion, four hundred fifty-seven million, six hundred fifty-five thousand, eight hundred five".