151683421 has 2 divisors, whose sum is σ = 151683422. Its totient is φ = 151683420.

The previous prime is 151683391. The next prime is 151683431. The reversal of 151683421 is 124386151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106605625 + 45077796 = 10325^2 + 6714^2 .

It is a cyclic number.

It is not a de Polignac number, because 151683421 - 2⁷ = 151683293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151683431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75841710 + 75841711.

It is an arithmetic number, because the mean of its divisors is an integer number (75841711).

Almost surely, 2^151683421 is an apocalyptic number.

It is an amenable number.

151683421 is a deficient number, since it is larger than the sum of its proper divisors (1).

151683421 is an equidigital number, since it uses as much as digits as its factorization.

151683421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 151683421 is about 12315.9823400328. The cubic root of 151683421 is about 533.3095634806.

The spelling of 151683421 in words is "one hundred fifty-one million, six hundred eighty-three thousand, four hundred twenty-one".