451542031 has 2 divisors, whose sum is σ = 451542032. Its totient is φ = 451542030.

The previous prime is 451542029. The next prime is 451542053. The reversal of 451542031 is 130245154.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451542031 - 2¹ = 451542029 is a prime.

It is a super-2 number, since 2×451542031² = 407780411519209922, which contains 22 as substring.

Together with 451542029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 451541987 and 451542005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451542071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225771015 + 225771016.

It is an arithmetic number, because the mean of its divisors is an integer number (225771016).

Almost surely, 2^451542031 is an apocalyptic number.

451542031 is a deficient number, since it is larger than the sum of its proper divisors (1).

451542031 is an equidigital number, since it uses as much as digits as its factorization.

451542031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 451542031 is about 21249.5183710126. The cubic root of 451542031 is about 767.1837477298.

Adding to 451542031 its reverse (130245154), we get a palindrome (581787185).

The spelling of 451542031 in words is "four hundred fifty-one million, five hundred forty-two thousand, thirty-one".