61149547 has 8 divisors (see below), whose sum is σ = 62380800. Its totient is φ = 59924904.

The previous prime is 61149533. The next prime is 61149553. The reversal of 61149547 is 74594116.

61149547 is nontrivially palindromic in base 4.

61149547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61149547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61149047) 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 7 ways as a sum of consecutive naturals, for example, 19738 + ... + 22624.

It is an arithmetic number, because the mean of its divisors is an integer number (7797600).

Almost surely, 2^61149547 is an apocalyptic number.

61149547 is a deficient number, since it is larger than the sum of its proper divisors (1231253).

61149547 is a wasteful number, since it uses less digits than its factorization.

61149547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its digits is 30240, while the sum is 37.

The square root of 61149547 is about 7819.8175809925. The cubic root of 61149547 is about 393.9711450434.

The spelling of 61149547 in words is "sixty-one million, one hundred forty-nine thousand, five hundred forty-seven".