101550840 has 64 divisors (see below), whose sum is σ = 307389600. Its totient is φ = 26836992.

The previous prime is 101550833. The next prime is 101550847. The reversal of 101550840 is 48055101.

It is an interprime number because it is at equal distance from previous prime (101550833) and next prime (101550847).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 101550840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101550847) 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, 9816 + ... + 17304.

Almost surely, 2^101550840 is an apocalyptic number.

101550840 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 101550840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153694800).

101550840 is an abundant number, since it is smaller than the sum of its proper divisors (205838760).

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

101550840 is a wasteful number, since it uses less digits than its factorization.

101550840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616 (or 7612 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 101550840 is about 10077.2436707663. The cubic root of 101550840 is about 466.5460391167.

The spelling of 101550840 in words is "one hundred one million, five hundred fifty thousand, eight hundred forty".