150621540 has 48 divisors (see below), whose sum is σ = 422755200. Its totient is φ = 40069120.

The previous prime is 150621533. The next prime is 150621551. The reversal of 150621540 is 45126051.

150621540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 150621540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24145 + ... + 29735.

It is an arithmetic number, because the mean of its divisors is an integer number (8807400).

Almost surely, 2^150621540 is an apocalyptic number.

150621540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

150621540 is an abundant number, since it is smaller than the sum of its proper divisors (272133660).

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

150621540 is a wasteful number, since it uses less digits than its factorization.

150621540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052 (or 6050 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 150621540 is about 12272.7967472781. The cubic root of 150621540 is about 532.0621453021.

Adding to 150621540 its reverse (45126051), we get a palindrome (195747591).

The spelling of 150621540 in words is "one hundred fifty million, six hundred twenty-one thousand, five hundred forty".