55307758 has 16 divisors (see below), whose sum is σ = 90681264. Its totient is φ = 25090560.

The previous prime is 55307753. The next prime is 55307771. The reversal of 55307758 is 85770355.

It is a self number, because there is not a number n which added to its sum of digits gives 55307758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55307753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10516 + ... + 14872.

It is an arithmetic number, because the mean of its divisors is an integer number (5667579).

Almost surely, 2^55307758 is an apocalyptic number.

55307758 is a deficient number, since it is larger than the sum of its proper divisors (35373506).

55307758 is a wasteful number, since it uses less digits than its factorization.

55307758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 55307758 is about 7436.9185823162. The cubic root of 55307758 is about 381.0032538306.

It can be divided in two parts, 55307 and 758, that added together give a palindrome (56065).

The spelling of 55307758 in words is "fifty-five million, three hundred seven thousand, seven hundred fifty-eight".