52554431 has 2 divisors, whose sum is σ = 52554432. Its totient is φ = 52554430.

The previous prime is 52554421. The next prime is 52554457. The reversal of 52554431 is 13445525.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52554431 is a prime.

It is a super-2 number, since 2×52554431² = 5523936435467522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52554394 and 52554403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52554421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26277215 + 26277216.

It is an arithmetic number, because the mean of its divisors is an integer number (26277216).

Almost surely, 2^52554431 is an apocalyptic number.

52554431 is a deficient number, since it is larger than the sum of its proper divisors (1).

52554431 is an equidigital number, since it uses as much as digits as its factorization.

52554431 is an evil number, because the sum of its binary digits is even.

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

The square root of 52554431 is about 7249.4434958830. The cubic root of 52554431 is about 374.5729800024.

Adding to 52554431 its reverse (13445525), we get a palindrome (65999956).

The spelling of 52554431 in words is "fifty-two million, five hundred fifty-four thousand, four hundred thirty-one".