61123555 has 8 divisors (see below), whose sum is σ = 73432800. Its totient is φ = 48842496.

The previous prime is 61123553. The next prime is 61123571. The reversal of 61123555 is 55532116.

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

It is a cyclic number.

It is not a de Polignac number, because 61123555 - 2¹ = 61123553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61123553) 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, 1935 + ... + 11224.

It is an arithmetic number, because the mean of its divisors is an integer number (9179100).

Almost surely, 2^61123555 is an apocalyptic number.

61123555 is a deficient number, since it is larger than the sum of its proper divisors (12309245).

61123555 is a wasteful number, since it uses less digits than its factorization.

61123555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14093.

The product of its digits is 4500, while the sum is 28.

The square root of 61123555 is about 7818.1554730000. The cubic root of 61123555 is about 393.9153171607.

The spelling of 61123555 in words is "sixty-one million, one hundred twenty-three thousand, five hundred fifty-five".