151222500 has 360 divisors, whose sum is σ = 573116544. Its totient is φ = 33120000.

The previous prime is 151222499. The next prime is 151222523. The reversal of 151222500 is 5222151.

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

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3217477 + ... + 3217523.

Almost surely, 2^151222500 is an apocalyptic number.

151222500 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 151222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286558272).

151222500 is an abundant number, since it is smaller than the sum of its proper divisors (421894044).

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

151222500 is a wasteful number, since it uses less digits than its factorization.

151222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 151222500 is about 12297.2557914357. The cubic root of 151222500 is about 532.7688254492.

Adding to 151222500 its reverse (5222151), we get a palindrome (156444651).

The spelling of 151222500 in words is "one hundred fifty-one million, two hundred twenty-two thousand, five hundred".