52687949 has 2 divisors, whose sum is σ = 52687950. Its totient is φ = 52687948.

The previous prime is 52687939. The next prime is 52687951. The reversal of 52687949 is 94978625.

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., 43428100 + 9259849 = 6590^2 + 3043^2 .

It is a cyclic number.

It is not a de Polignac number, because 52687949 - 2⁴ = 52687933 is a prime.

Together with 52687951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52687897 and 52687906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52687909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26343974 + 26343975.

It is an arithmetic number, because the mean of its divisors is an integer number (26343975).

Almost surely, 2^52687949 is an apocalyptic number.

It is an amenable number.

52687949 is a deficient number, since it is larger than the sum of its proper divisors (1).

52687949 is an equidigital number, since it uses as much as digits as its factorization.

52687949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 52687949 is about 7258.6464991760. The cubic root of 52687949 is about 374.8899208752.

The spelling of 52687949 in words is "fifty-two million, six hundred eighty-seven thousand, nine hundred forty-nine".