55782545 has 16 divisors (see below), whose sum is σ = 82387200. Its totient is φ = 35308224.

The previous prime is 55782541. The next prime is 55782577. The reversal of 55782545 is 54528755.

It is not a de Polignac number, because 55782545 - 2² = 55782541 is a prime.

It is a super-2 number, since 2×55782545² = 6223384653354050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55782541) 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, 60845 + ... + 61754.

It is an arithmetic number, because the mean of its divisors is an integer number (5149200).

Almost surely, 2^55782545 is an apocalyptic number.

It is an amenable number.

55782545 is a deficient number, since it is larger than the sum of its proper divisors (26604655).

55782545 is a wasteful number, since it uses less digits than its factorization.

55782545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122624.

The product of its digits is 280000, while the sum is 41.

The square root of 55782545 is about 7468.7713179612. The cubic root of 55782545 is about 382.0903841206.

The spelling of 55782545 in words is "fifty-five million, seven hundred eighty-two thousand, five hundred forty-five".