103215560 has 64 divisors (see below), whose sum is σ = 270864000. Its totient is φ = 35383488.

The previous prime is 103215547. The next prime is 103215587. The reversal of 103215560 is 65512301.

It is a super-2 number, since 2×103215560² = 21306903652227200, which contains 22 as substring.

It is an unprimeable number.

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, 9959 + ... + 17481.

It is an arithmetic number, because the mean of its divisors is an integer number (4232250).

Almost surely, 2^103215560 is an apocalyptic number.

103215560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103215560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135432000).

103215560 is an abundant number, since it is smaller than the sum of its proper divisors (167648440).

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

103215560 is an equidigital number, since it uses as much as digits as its factorization.

103215560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555 (or 7537 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 103215560 is about 10159.5058934970. The cubic root of 103215560 is about 469.0815926953.

Adding to 103215560 its reverse (65512301), we get a palindrome (168727861).

The spelling of 103215560 in words is "one hundred three million, two hundred fifteen thousand, five hundred sixty".