2545401784 has 8 divisors (see below), whose sum is σ = 4772628360. Its totient is φ = 1272700888.

The previous prime is 2545401779. The next prime is 2545401787. The reversal of 2545401784 is 4871045452.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545401787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159087604 + ... + 159087619.

It is an arithmetic number, because the mean of its divisors is an integer number (596578545).

Almost surely, 2^2545401784 is an apocalyptic number.

It is an amenable number.

2545401784 is a deficient number, since it is larger than the sum of its proper divisors (2227226576).

2545401784 is a wasteful number, since it uses less digits than its factorization.

2545401784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318175229 (or 318175225 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 40.

The square root of 2545401784 is about 50451.9750257609. The cubic root of 2545401784 is about 1365.3755283561.

The spelling of 2545401784 in words is "two billion, five hundred forty-five million, four hundred one thousand, seven hundred eighty-four".