167221560 has 64 divisors (see below), whose sum is σ = 547274880. Its totient is φ = 40538240.

The previous prime is 167221547. The next prime is 167221567. The reversal of 167221560 is 65122761.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167221567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62022 + ... + 64661.

It is an arithmetic number, because the mean of its divisors is an integer number (8551170).

Almost surely, 2^167221560 is an apocalyptic number.

167221560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

167221560 is an abundant number, since it is smaller than the sum of its proper divisors (380053320).

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

167221560 is a wasteful number, since it uses less digits than its factorization.

167221560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126708 (or 126704 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 167221560 is about 12931.4175557052. The cubic root of 167221560 is about 550.9312707490.

It can be divided in two parts, 1672 and 21560, that added together give a palindrome (23232).

The spelling of 167221560 in words is "one hundred sixty-seven million, two hundred twenty-one thousand, five hundred sixty".