61443107 has 4 divisors (see below), whose sum is σ = 67028856. Its totient is φ = 55857360.

The previous prime is 61443103. The next prime is 61443113. The reversal of 61443107 is 70134416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61443107 - 2² = 61443103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61443103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2792858 + ... + 2792879.

It is an arithmetic number, because the mean of its divisors is an integer number (16757214).

Almost surely, 2^61443107 is an apocalyptic number.

61443107 is a deficient number, since it is larger than the sum of its proper divisors (5585749).

61443107 is a wasteful number, since it uses less digits than its factorization.

61443107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5585748.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 61443107 is about 7838.5653661879. The cubic root of 61443107 is about 394.6005832746.

The spelling of 61443107 in words is "sixty-one million, four hundred forty-three thousand, one hundred seven".