42553619 has 2 divisors, whose sum is σ = 42553620. Its totient is φ = 42553618.

The previous prime is 42553603. The next prime is 42553627. The reversal of 42553619 is 91635524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42553619 - 2⁴ = 42553603 is a prime.

It is a super-2 number, since 2×42553619² = 3621620979994322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42553639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21276809 + 21276810.

It is an arithmetic number, because the mean of its divisors is an integer number (21276810).

Almost surely, 2^42553619 is an apocalyptic number.

42553619 is a deficient number, since it is larger than the sum of its proper divisors (1).

42553619 is an equidigital number, since it uses as much as digits as its factorization.

42553619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 42553619 is about 6523.3134985221. The cubic root of 42553619 is about 349.1232997014.

The spelling of 42553619 in words is "forty-two million, five hundred fifty-three thousand, six hundred nineteen".