151971437 has 2 divisors, whose sum is σ = 151971438. Its totient is φ = 151971436.

The previous prime is 151971409. The next prime is 151971439. The reversal of 151971437 is 734179151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146071396 + 5900041 = 12086^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 151971437 - 2¹² = 151967341 is a prime.

Together with 151971439, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151971437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151971439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75985718 + 75985719.

It is an arithmetic number, because the mean of its divisors is an integer number (75985719).

Almost surely, 2^151971437 is an apocalyptic number.

It is an amenable number.

151971437 is a deficient number, since it is larger than the sum of its proper divisors (1).

151971437 is an equidigital number, since it uses as much as digits as its factorization.

151971437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 38.

The square root of 151971437 is about 12327.6695689007. The cubic root of 151971437 is about 533.6468988975.

The spelling of 151971437 in words is "one hundred fifty-one million, nine hundred seventy-one thousand, four hundred thirty-seven".