1655010061 has 4 divisors (see below), whose sum is σ = 1752363612. Its totient is φ = 1557656512.

The previous prime is 1655010043. The next prime is 1655010109. The reversal of 1655010061 is 1600105561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1600105561 = 23 ⋅69569807.

It can be written as a sum of positive squares in 2 ways, for example, as 808549225 + 846460836 = 28435^2 + 29094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655010061 - 2¹¹ = 1655008013 is a prime.

It is a super-2 number, since 2×1655010061² = 5478116604022447442, 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 (1655010031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48676750 + ... + 48676783.

It is an arithmetic number, because the mean of its divisors is an integer number (438090903).

Almost surely, 2^1655010061 is an apocalyptic number.

It is an amenable number.

1655010061 is a deficient number, since it is larger than the sum of its proper divisors (97353551).

1655010061 is an equidigital number, since it uses as much as digits as its factorization.

1655010061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97353550.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1655010061 is about 40681.8148685626. The cubic root of 1655010061 is about 1182.8605455237.

The spelling of 1655010061 in words is "one billion, six hundred fifty-five million, ten thousand, sixty-one".