61162973 has 2 divisors, whose sum is σ = 61162974. Its totient is φ = 61162972.

The previous prime is 61162963. The next prime is 61162987. The reversal of 61162973 is 37926116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47927929 + 13235044 = 6923^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 61162973 - 2⁶ = 61162909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61162963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581486 + 30581487.

It is an arithmetic number, because the mean of its divisors is an integer number (30581487).

Almost surely, 2^61162973 is an apocalyptic number.

It is an amenable number.

61162973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61162973 is an equidigital number, since it uses as much as digits as its factorization.

61162973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 61162973 is about 7820.6759938000. The cubic root of 61162973 is about 393.9999763800. Note that the first 4 decimals are identical.

The spelling of 61162973 in words is "sixty-one million, one hundred sixty-two thousand, nine hundred seventy-three".