1545431 has 2 divisors, whose sum is σ = 1545432. Its totient is φ = 1545430.

The previous prime is 1545421. The next prime is 1545433. The reversal of 1545431 is 1345451.

It is a strong prime.

It is an emirp because it is prime and its reverse (1345451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1545431 - 2⁶ = 1545367 is a prime.

It is a super-2 number, since 2×1545431² = 4776713951522, which contains 22 as substring.

Together with 1545433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1545397 and 1545406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772715 + 772716.

It is an arithmetic number, because the mean of its divisors is an integer number (772716).

2^1545431 is an apocalyptic number.

1545431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545431 is an equidigital number, since it uses as much as digits as its factorization.

1545431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 1545431 is about 1243.1536510022. The cubic root of 1545431 is about 115.6156272899.

The spelling of 1545431 in words is "one million, five hundred forty-five thousand, four hundred thirty-one".