166087250 has 32 divisors (see below), whose sum is σ = 355335552. Its totient is φ = 56943600.

The previous prime is 166087249. The next prime is 166087253. The reversal of 166087250 is 52780661.

It is a super-2 number, since 2×166087250² = 55169949225125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166087250.

It is not an unprimeable number, because it can be changed into a prime (166087253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45704 + ... + 49203.

It is an arithmetic number, because the mean of its divisors is an integer number (11104236).

Almost surely, 2^166087250 is an apocalyptic number.

166087250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166087250 is an abundant number, since it is smaller than the sum of its proper divisors (189248302).

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

166087250 is an equidigital number, since it uses as much as digits as its factorization.

166087250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94931 (or 94921 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 166087250 is about 12887.4842385937. The cubic root of 166087250 is about 549.6827371350.

The spelling of 166087250 in words is "one hundred sixty-six million, eighty-seven thousand, two hundred fifty".