42553451 has 2 divisors, whose sum is σ = 42553452. Its totient is φ = 42553450.

The previous prime is 42553409. The next prime is 42553453. The reversal of 42553451 is 15435524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42553451 - 2⁶ = 42553387 is a prime.

Together with 42553453, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2579231 and since 42553451 and 2579231 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42553453) 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, 21276725 + 21276726.

It is an arithmetic number, because the mean of its divisors is an integer number (21276726).

Almost surely, 2^42553451 is an apocalyptic number.

42553451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42553451 is an equidigital number, since it uses as much as digits as its factorization.

42553451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 42553451 is about 6523.3006216179. The cubic root of 42553451 is about 349.1228402591.

Adding to 42553451 its reverse (15435524), we get a palindrome (57988975).

The spelling of 42553451 in words is "forty-two million, five hundred fifty-three thousand, four hundred fifty-one".