61051605 has 16 divisors (see below), whose sum is σ = 97943040. Its totient is φ = 32474048.

The previous prime is 61051577. The next prime is 61051619. The reversal of 61051605 is 50615016.

It is a cyclic number.

It is not a de Polignac number, because 61051605 - 2¹⁷ = 60920533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (6121440).

Almost surely, 2^61051605 is an apocalyptic number.

It is an amenable number.

61051605 is a deficient number, since it is larger than the sum of its proper divisors (36891435).

61051605 is a wasteful number, since it uses less digits than its factorization.

61051605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10860.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 61051605 is about 7813.5526490835. The cubic root of 61051605 is about 393.7606940910.

The spelling of 61051605 in words is "sixty-one million, fifty-one thousand, six hundred five".