63426557 has 4 divisors (see below), whose sum is σ = 63480060. Its totient is φ = 63373056.

The previous prime is 63426533. The next prime is 63426569. The reversal of 63426557 is 75562436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12432676 + 50993881 = 3526^2 + 7141^2 .

It is a cyclic number.

It is not a de Polignac number, because 63426557 - 2⁸ = 63426301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63426557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63426577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24932 + ... + 27357.

It is an arithmetic number, because the mean of its divisors is an integer number (15870015).

Almost surely, 2^63426557 is an apocalyptic number.

It is an amenable number.

63426557 is a deficient number, since it is larger than the sum of its proper divisors (53503).

63426557 is a wasteful number, since it uses less digits than its factorization.

63426557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53502.

The product of its digits is 151200, while the sum is 38.

The square root of 63426557 is about 7964.0791683659. The cubic root of 63426557 is about 398.8017411067.

The spelling of 63426557 in words is "sixty-three million, four hundred twenty-six thousand, five hundred fifty-seven".