2451561764 has 12 divisors (see below), whose sum is σ = 4292278284. Its totient is φ = 1225196544.

The previous prime is 2451561731. The next prime is 2451561767. The reversal of 2451561764 is 4671651542.

2451561764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 498628900 + 1952932864 = 22330^2 + 44192^2 .

It is not an unprimeable number, because it can be changed into a prime (2451561767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136577 + ... + 153480.

It is an arithmetic number, because the mean of its divisors is an integer number (357689857).

Almost surely, 2^2451561764 is an apocalyptic number.

It is an amenable number.

2451561764 is a deficient number, since it is larger than the sum of its proper divisors (1840716520).

2451561764 is a wasteful number, since it uses less digits than its factorization.

2451561764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292174 (or 292172 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 2451561764 is about 49513.2483684922. The cubic root of 2451561764 is about 1348.3861398808.

The spelling of 2451561764 in words is "two billion, four hundred fifty-one million, five hundred sixty-one thousand, seven hundred sixty-four".