42453553 has 2 divisors, whose sum is σ = 42453554. Its totient is φ = 42453552.

The previous prime is 42453547. The next prime is 42453557. The reversal of 42453553 is 35535424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40742689 + 1710864 = 6383^2 + 1308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42453553 is a prime.

It is equal to p_2573527 and since 42453553 and 2573527 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 (42453557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21226776 + 21226777.

It is an arithmetic number, because the mean of its divisors is an integer number (21226777).

Almost surely, 2^42453553 is an apocalyptic number.

It is an amenable number.

42453553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42453553 is an equidigital number, since it uses as much as digits as its factorization.

42453553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 31.

The square root of 42453553 is about 6515.6391090974. The cubic root of 42453553 is about 348.8494272507.

Adding to 42453553 its reverse (35535424), we get a palindrome (77988977).

The spelling of 42453553 in words is "forty-two million, four hundred fifty-three thousand, five hundred fifty-three".