151555220 has 24 divisors (see below), whose sum is σ = 325669344. Its totient is φ = 59211936.

The previous prime is 151555207. The next prime is 151555223. The reversal of 151555220 is 22555151.

It is a self number, because there is not a number n which added to its sum of digits gives 151555220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151555223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87254 + ... + 88973.

It is an arithmetic number, because the mean of its divisors is an integer number (13569556).

Almost surely, 2^151555220 is an apocalyptic number.

151555220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151555220 is an abundant number, since it is smaller than the sum of its proper divisors (174114124).

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

151555220 is a wasteful number, since it uses less digits than its factorization.

151555220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176279 (or 176277 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 151555220 is about 12310.7765798913. The cubic root of 151555220 is about 533.1592721918.

The spelling of 151555220 in words is "one hundred fifty-one million, five hundred fifty-five thousand, two hundred twenty".