150675821 has 2 divisors, whose sum is σ = 150675822. Its totient is φ = 150675820.

The previous prime is 150675809. The next prime is 150675857. The reversal of 150675821 is 128576051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150675625 + 196 = 12275^2 + 14^2 .

It is an emirp because it is prime and its reverse (128576051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150675821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150675881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75337910 + 75337911.

It is an arithmetic number, because the mean of its divisors is an integer number (75337911).

Almost surely, 2^150675821 is an apocalyptic number.

It is an amenable number.

150675821 is a deficient number, since it is larger than the sum of its proper divisors (1).

150675821 is an equidigital number, since it uses as much as digits as its factorization.

150675821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 150675821 is about 12275.0079837041. The cubic root of 150675821 is about 532.1260524888.

The spelling of 150675821 in words is "one hundred fifty million, six hundred seventy-five thousand, eight hundred twenty-one".