158421651 has 8 divisors (see below), whose sum is σ = 211746960. Its totient is φ = 105355392.

The previous prime is 158421649. The next prime is 158421671. The reversal of 158421651 is 156124851.

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

It is not a de Polignac number, because 158421651 - 2¹ = 158421649 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (158421671) 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, 63330 + ... + 65783.

It is an arithmetic number, because the mean of its divisors is an integer number (26468370).

Almost surely, 2^158421651 is an apocalyptic number.

158421651 is a deficient number, since it is larger than the sum of its proper divisors (53325309).

158421651 is a wasteful number, since it uses less digits than its factorization.

158421651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129525.

The product of its digits is 9600, while the sum is 33.

The square root of 158421651 is about 12586.5662910899. The cubic root of 158421651 is about 541.0924967381.

The spelling of 158421651 in words is "one hundred fifty-eight million, four hundred twenty-one thousand, six hundred fifty-one".