151211800 has 96 divisors (see below), whose sum is σ = 375868800. Its totient is φ = 56515200.

The previous prime is 151211791. The next prime is 151211803. The reversal of 151211800 is 8112151.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151211803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4877785 + ... + 4877815.

It is an arithmetic number, because the mean of its divisors is an integer number (3915300).

Almost surely, 2^151211800 is an apocalyptic number.

151211800 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 151211800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187934400).

151211800 is an abundant number, since it is smaller than the sum of its proper divisors (224657000).

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

151211800 is an equidigital number, since it uses as much as digits as its factorization.

151211800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 151211800 is about 12296.8207273262. The cubic root of 151211800 is about 532.7562595041.

Adding to 151211800 its reverse (8112151), we get a palindrome (159323951).

The spelling of 151211800 in words is "one hundred fifty-one million, two hundred eleven thousand, eight hundred".