61545004 has 12 divisors (see below), whose sum is σ = 107758728. Its totient is φ = 30756800.

The previous prime is 61544999. The next prime is 61545007. The reversal of 61545004 is 40054516.

61545004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61545004.

It is not an unprimeable number, because it can be changed into a prime (61545007) 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 3 ways as a sum of consecutive naturals, for example, 12999 + ... + 17089.

It is an arithmetic number, because the mean of its divisors is an integer number (8979894).

Almost surely, 2^61545004 is an apocalyptic number.

It is an amenable number.

61545004 is a deficient number, since it is larger than the sum of its proper divisors (46213724).

61545004 is a wasteful number, since it uses less digits than its factorization.

61545004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7856 (or 7854 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 61545004 is about 7845.0623961827. The cubic root of 61545004 is about 394.8185974712.

The spelling of 61545004 in words is "sixty-one million, five hundred forty-five thousand, four".