61040001 has 16 divisors (see below), whose sum is σ = 89576640. Its totient is φ = 36664320.

The previous prime is 61039991. The next prime is 61040009. The reversal of 61040001 is 10004016.

It is not a de Polignac number, because 61040001 - 2²² = 56845697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61040009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4456 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (5598540).

Almost surely, 2^61040001 is an apocalyptic number.

It is an amenable number.

61040001 is a deficient number, since it is larger than the sum of its proper divisors (28536639).

61040001 is a wasteful number, since it uses less digits than its factorization.

61040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16496.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 61040001 is about 7812.8100578473. The cubic root of 61040001 is about 393.7357453141.

Adding to 61040001 its reverse (10004016), we get a palindrome (71044017).

The spelling of 61040001 in words is "sixty-one million, forty thousand, one".