61020801 has 12 divisors (see below), whose sum is σ = 89586900. Its totient is φ = 40013280.

The previous prime is 61020797. The next prime is 61020821. The reversal of 61020801 is 10802016.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 48233025 = 3576^2 + 6945^2 .

It is not a de Polignac number, because 61020801 - 2² = 61020797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61020821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55026 + ... + 56123.

It is an arithmetic number, because the mean of its divisors is an integer number (7465575).

Almost surely, 2^61020801 is an apocalyptic number.

61020801 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61020801 is a deficient number, since it is larger than the sum of its proper divisors (28566099).

61020801 is a wasteful number, since it uses less digits than its factorization.

61020801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111216 (or 111213 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 61020801 is about 7811.5812099728. The cubic root of 61020801 is about 393.6944580765.

Adding to 61020801 its reverse (10802016), we get a palindrome (71822817).

The spelling of 61020801 in words is "sixty-one million, twenty thousand, eight hundred one".