61018801 has 4 divisors (see below), whose sum is σ = 61499392. Its totient is φ = 60538212.

The previous prime is 61018799. The next prime is 61018807. The reversal of 61018801 is 10881016.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61018801 - 2¹ = 61018799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61018807) 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, 240105 + ... + 240358.

It is an arithmetic number, because the mean of its divisors is an integer number (15374848).

Almost surely, 2^61018801 is an apocalyptic number.

It is an amenable number.

61018801 is a deficient number, since it is larger than the sum of its proper divisors (480591).

61018801 is a wasteful number, since it uses less digits than its factorization.

61018801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480590.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 61018801 is about 7811.4531938686. The cubic root of 61018801 is about 393.6901568245.

Adding to 61018801 its reverse (10881016), we get a palindrome (71899817).

The spelling of 61018801 in words is "sixty-one million, eighteen thousand, eight hundred one".