151211520 has 120 divisors (see below), whose sum is σ = 523767816. Its totient is φ = 40316928.

The previous prime is 151211477. The next prime is 151211531. The reversal of 151211520 is 25112151.

151211520 is a `hidden beast` number, since 1 + 512 + 1 + 152 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 151211493 and 151211502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19759 + ... + 26321.

Almost surely, 2^151211520 is an apocalyptic number.

151211520 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 151211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261883908).

151211520 is an abundant number, since it is smaller than the sum of its proper divisors (372556296).

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

151211520 is an equidigital number, since it uses as much as digits as its factorization.

151211520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 151211520 is about 12296.8093422644. The cubic root of 151211520 is about 532.7559306677.

Adding to 151211520 its reverse (25112151), we get a palindrome (176323671).

It can be divided in two parts, 15121 and 1520, that added together give a square (16641 = 129²).

The spelling of 151211520 in words is "one hundred fifty-one million, two hundred eleven thousand, five hundred twenty".