42551453 has 6 divisors (see below), whose sum is σ = 49498686. Its totient is φ = 36472632.

The previous prime is 42551447. The next prime is 42551461. The reversal of 42551453 is 35415524.

It can be written as a sum of positive squares in only one way, i.e., 24078649 + 18472804 = 4907^2 + 4298^2 .

It is not a de Polignac number, because 42551453 - 2⁶ = 42551389 is a prime.

It is a super-2 number, since 2×42551453² = 3621252304822418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42551413) 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 in 5 ways as a sum of consecutive naturals, for example, 434150 + ... + 434247.

It is an arithmetic number, because the mean of its divisors is an integer number (8249781).

Almost surely, 2^42551453 is an apocalyptic number.

It is an amenable number.

42551453 is a deficient number, since it is larger than the sum of its proper divisors (6947233).

42551453 is an equidigital number, since it uses as much as digits as its factorization.

42551453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868411 (or 868404 counting only the distinct ones).

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

The square root of 42551453 is about 6523.1474764871. The cubic root of 42551453 is about 349.1173760853.

Adding to 42551453 its reverse (35415524), we get a palindrome (77966977).

The spelling of 42551453 in words is "forty-two million, five hundred fifty-one thousand, four hundred fifty-three".