151974881 has 2 divisors, whose sum is σ = 151974882. Its totient is φ = 151974880.

The previous prime is 151974871. The next prime is 151974913. The reversal of 151974881 is 188479151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 5564881 = 12100^2 + 2359^2 .

It is a cyclic number.

It is not a de Polignac number, because 151974881 - 2⁶ = 151974817 is a prime.

It is a super-2 number, since 2×151974881² = 46192728909928322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151974821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75987440 + 75987441.

It is an arithmetic number, because the mean of its divisors is an integer number (75987441).

Almost surely, 2^151974881 is an apocalyptic number.

It is an amenable number.

151974881 is a deficient number, since it is larger than the sum of its proper divisors (1).

151974881 is an equidigital number, since it uses as much as digits as its factorization.

151974881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 44.

The square root of 151974881 is about 12327.8092538780. The cubic root of 151974881 is about 533.6509300630.

The spelling of 151974881 in words is "one hundred fifty-one million, nine hundred seventy-four thousand, eight hundred eighty-one".