55707545 has 4 divisors (see below), whose sum is σ = 66849060. Its totient is φ = 44566032.

The previous prime is 55707539. The next prime is 55707581. The reversal of 55707545 is 54570755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24760576 + 30946969 = 4976^2 + 5563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55707545 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55707499 and 55707508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570750 + ... + 5570759.

It is an arithmetic number, because the mean of its divisors is an integer number (16712265).

Almost surely, 2^55707545 is an apocalyptic number.

It is an amenable number.

55707545 is a deficient number, since it is larger than the sum of its proper divisors (11141515).

55707545 is a wasteful number, since it uses less digits than its factorization.

55707545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141514.

The product of its (nonzero) digits is 122500, while the sum is 38.

The square root of 55707545 is about 7463.7487229944. The cubic root of 55707545 is about 381.9190663038.

The spelling of 55707545 in words is "fifty-five million, seven hundred seven thousand, five hundred forty-five".