61001047 has 8 divisors (see below), whose sum is σ = 62845200. Its totient is φ = 59176320.

The previous prime is 61001033. The next prime is 61001051. The reversal of 61001047 is 74010016.

It is a happy number.

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-61001047 is a prime.

It is a super-2 number, since 2×61001047² = 7442255470192418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001147) 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, 1647 + ... + 11167.

It is an arithmetic number, because the mean of its divisors is an integer number (7855650).

Almost surely, 2^61001047 is an apocalyptic number.

61001047 is a deficient number, since it is larger than the sum of its proper divisors (1844153).

61001047 is a wasteful number, since it uses less digits than its factorization.

61001047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 61001047 is about 7810.3167029257. The cubic root of 61001047 is about 393.6519704900.

The spelling of 61001047 in words is "sixty-one million, one thousand, forty-seven".