61245801 has 20 divisors (see below), whose sum is σ = 94445824. Its totient is φ = 39511800.

The previous prime is 61245799. The next prime is 61245809. The reversal of 61245801 is 10854216.

61245801 is a `hidden beast` number, since 61 + 24 + 580 + 1 = 666.

61245801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61245801 - 2¹ = 61245799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61245809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9685 + ... + 14706.

Almost surely, 2^61245801 is an apocalyptic number.

It is an amenable number.

61245801 is a deficient number, since it is larger than the sum of its proper divisors (33200023).

61245801 is a wasteful number, since it uses less digits than its factorization.

61245801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24434 (or 24425 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 61245801 is about 7825.9696523817. The cubic root of 61245801 is about 394.1777501116.

The spelling of 61245801 in words is "sixty-one million, two hundred forty-five thousand, eight hundred one".