52551666 has 24 divisors (see below), whose sum is σ = 118080144. Its totient is φ = 17517060.

The previous prime is 52551661. The next prime is 52551671. The reversal of 52551666 is 66615525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52551661) and next prime (52551671).

It is a self number, because there is not a number n which added to its sum of digits gives 52551666.

It is not an unprimeable number, because it can be changed into a prime (52551661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53580 + ... + 54551.

It is an arithmetic number, because the mean of its divisors is an integer number (4920006).

Almost surely, 2^52551666 is an apocalyptic number.

52551666 is an abundant number, since it is smaller than the sum of its proper divisors (65528478).

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

52551666 is a wasteful number, since it uses less digits than its factorization.

52551666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108148 (or 108136 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 52551666 is about 7249.2527890811. The cubic root of 52551666 is about 374.5664108611.

The spelling of 52551666 in words is "fifty-two million, five hundred fifty-one thousand, six hundred sixty-six".