4151531 has 2 divisors, whose sum is σ = 4151532. Its totient is φ = 4151530.

The previous prime is 4151501. The next prime is 4151533. The reversal of 4151531 is 1351514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4151531 - 2⁶ = 4151467 is a prime.

It is a super-2 number, since 2×4151531² = 34470419287922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4151533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4151533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075765 + 2075766.

It is an arithmetic number, because the mean of its divisors is an integer number (2075766).

Almost surely, 2^4151531 is an apocalyptic number.

4151531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4151531 is an equidigital number, since it uses as much as digits as its factorization.

4151531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 20.

The square root of 4151531 is about 2037.5306132670. The cubic root of 4151531 is about 160.7198166891.

The spelling of 4151531 in words is "four million, one hundred fifty-one thousand, five hundred thirty-one".