151033921 has 2 divisors, whose sum is σ = 151033922. Its totient is φ = 151033920.

The previous prime is 151033919. The next prime is 151033937. The reversal of 151033921 is 129330151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151019521 + 14400 = 12289^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 151033921 - 2¹ = 151033919 is a prime.

It is a super-2 number, since 2×151033921² = 45622490585268482, which contains 22 as substring.

Together with 151033919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (151033951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75516960 + 75516961.

It is an arithmetic number, because the mean of its divisors is an integer number (75516961).

Almost surely, 2^151033921 is an apocalyptic number.

It is an amenable number.

151033921 is a deficient number, since it is larger than the sum of its proper divisors (1).

151033921 is an equidigital number, since it uses as much as digits as its factorization.

151033921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 151033921 is about 12289.5858758544. The cubic root of 151033921 is about 532.5472737535.

The spelling of 151033921 in words is "one hundred fifty-one million, thirty-three thousand, nine hundred twenty-one".