151424221 has 8 divisors (see below), whose sum is σ = 165507104. Its totient is φ = 137689200.

The previous prime is 151424201. The next prime is 151424257. The reversal of 151424221 is 122424151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151424221 - 2⁷ = 151424093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151424192 and 151424201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151424201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86055 + ... + 87796.

It is an arithmetic number, because the mean of its divisors is an integer number (20688388).

Almost surely, 2^151424221 is an apocalyptic number.

It is an amenable number.

151424221 is a deficient number, since it is larger than the sum of its proper divisors (14082883).

151424221 is a wasteful number, since it uses less digits than its factorization.

151424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173931.

The product of its digits is 640, while the sum is 22.

The square root of 151424221 is about 12305.4549286079. The cubic root of 151424221 is about 533.0056132053.

Adding to 151424221 its reverse (122424151), we get a palindrome (273848372).

The spelling of 151424221 in words is "one hundred fifty-one million, four hundred twenty-four thousand, two hundred twenty-one".