42553937 has 2 divisors, whose sum is σ = 42553938. Its totient is φ = 42553936.

The previous prime is 42553897. The next prime is 42553943. The reversal of 42553937 is 73935524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41075281 + 1478656 = 6409^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 42553937 - 2⁸ = 42553681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42553937.

It is not a weakly prime, because it can be changed into another prime (42553957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21276968 + 21276969.

It is an arithmetic number, because the mean of its divisors is an integer number (21276969).

Almost surely, 2^42553937 is an apocalyptic number.

It is an amenable number.

42553937 is a deficient number, since it is larger than the sum of its proper divisors (1).

42553937 is an equidigital number, since it uses as much as digits as its factorization.

42553937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 38.

The square root of 42553937 is about 6523.3378725925. The cubic root of 42553937 is about 349.1241693566.

It can be divided in two parts, 4255 and 3937, that added together give a 13-th power (8192 = 2¹³).

The spelling of 42553937 in words is "forty-two million, five hundred fifty-three thousand, nine hundred thirty-seven".