52550557 has 2 divisors, whose sum is σ = 52550558. Its totient is φ = 52550556.

The previous prime is 52550551. The next prime is 52550573. The reversal of 52550557 is 75505525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30591961 + 21958596 = 5531^2 + 4686^2 .

It is a cyclic number.

It is not a de Polignac number, because 52550557 - 2¹⁹ = 52026269 is a prime.

It is a super-2 number, since 2×52550557² = 5523122082020498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52550551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26275278 + 26275279.

It is an arithmetic number, because the mean of its divisors is an integer number (26275279).

Almost surely, 2^52550557 is an apocalyptic number.

It is an amenable number.

52550557 is a deficient number, since it is larger than the sum of its proper divisors (1).

52550557 is an equidigital number, since it uses as much as digits as its factorization.

52550557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 52550557 is about 7249.1762980355. The cubic root of 52550557 is about 374.5637760124.

The spelling of 52550557 in words is "fifty-two million, five hundred fifty thousand, five hundred fifty-seven".