61005507 has 8 divisors (see below), whose sum is σ = 81790800. Its totient is φ = 40445280.

The previous prime is 61005487. The next prime is 61005541. The reversal of 61005507 is 70550016.

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

It is not a de Polignac number, because 61005507 - 2⁸ = 61005251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61005557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55632 + ... + 56717.

It is an arithmetic number, because the mean of its divisors is an integer number (10223850).

Almost surely, 2^61005507 is an apocalyptic number.

61005507 is a deficient number, since it is larger than the sum of its proper divisors (20785293).

61005507 is a wasteful number, since it uses less digits than its factorization.

61005507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112533.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 61005507 is about 7810.6022174990. The cubic root of 61005507 is about 393.6615640139.

The spelling of 61005507 in words is "sixty-one million, five thousand, five hundred seven".