55707145 has 32 divisors (see below), whose sum is σ = 77616000. Its totient is φ = 38029824.

The previous prime is 55707143. The next prime is 55707149. The reversal of 55707145 is 54170755.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55707145 - 2¹ = 55707143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55707145.

It is not an unprimeable number, because it can be changed into a prime (55707143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52581 + ... + 53629.

It is an arithmetic number, because the mean of its divisors is an integer number (2425500).

Almost surely, 2^55707145 is an apocalyptic number.

It is an amenable number.

55707145 is a deficient number, since it is larger than the sum of its proper divisors (21908855).

55707145 is a wasteful number, since it uses less digits than its factorization.

55707145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 55707145 is about 7463.7219267601. The cubic root of 55707145 is about 381.9181521966.

The spelling of 55707145 in words is "fifty-five million, seven hundred seven thousand, one hundred forty-five".