151257218 has 12 divisors (see below), whose sum is σ = 263928582. Its totient is φ = 64824480.

The previous prime is 151257217. The next prime is 151257259. The reversal of 151257218 is 812752151.

It can be written as a sum of positive squares in only one way, i.e., 138462289 + 12794929 = 11767^2 + 3577^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151257217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 771623 + ... + 771818.

Almost surely, 2^151257218 is an apocalyptic number.

151257218 is a deficient number, since it is larger than the sum of its proper divisors (112671364).

151257218 is a wasteful number, since it uses less digits than its factorization.

151257218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543457 (or 1543450 counting only the distinct ones).

The product of its digits is 5600, while the sum is 32.

The square root of 151257218 is about 12298.6673261781. The cubic root of 151257218 is about 532.8095937493.

The spelling of 151257218 in words is "one hundred fifty-one million, two hundred fifty-seven thousand, two hundred eighteen".