55167740 has 24 divisors (see below), whose sum is σ = 118984992. Its totient is φ = 21470400.

The previous prime is 55167719. The next prime is 55167743. The reversal of 55167740 is 4776155.

It is a self number, because there is not a number n which added to its sum of digits gives 55167740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55167743) 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, 36536 + ... + 38015.

It is an arithmetic number, because the mean of its divisors is an integer number (4957708).

Almost surely, 2^55167740 is an apocalyptic number.

It is an amenable number.

55167740 is an abundant number, since it is smaller than the sum of its proper divisors (63817252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55167740 is a wasteful number, since it uses less digits than its factorization.

55167740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74597 (or 74595 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 55167740 is about 7427.4989060921. The cubic root of 55167740 is about 380.6814641622.

The spelling of 55167740 in words is "fifty-five million, one hundred sixty-seven thousand, seven hundred forty".