53561001 has 24 divisors (see below), whose sum is σ = 78265440. Its totient is φ = 32562816.

The previous prime is 53560993. The next prime is 53561029. The reversal of 53561001 is 10016535.

It is a happy number.

It is not a de Polignac number, because 53561001 - 2³ = 53560993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53561041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44530 + ... + 45716.

It is an arithmetic number, because the mean of its divisors is an integer number (3261060).

Almost surely, 2^53561001 is an apocalyptic number.

It is an amenable number.

53561001 is a deficient number, since it is larger than the sum of its proper divisors (24704439).

53561001 is a wasteful number, since it uses less digits than its factorization.

53561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 53561001 is about 7318.5381737065. The cubic root of 53561001 is about 376.9492599172.

Adding to 53561001 its reverse (10016535), we get a palindrome (63577536).

The spelling of 53561001 in words is "fifty-three million, five hundred sixty-one thousand, one".