61356101 has 4 divisors (see below), whose sum is σ = 63014412. Its totient is φ = 59697792.

The previous prime is 61356091. The next prime is 61356133. The reversal of 61356101 is 10165316.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32787076 + 28569025 = 5726^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 61356101 - 2¹⁴ = 61339717 is a prime.

It is a super-2 number, since 2×61356101² = 7529142259844402, 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 (61353101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829100 + ... + 829173.

It is an arithmetic number, because the mean of its divisors is an integer number (15753603).

Almost surely, 2^61356101 is an apocalyptic number.

It is an amenable number.

61356101 is a deficient number, since it is larger than the sum of its proper divisors (1658311).

61356101 is a wasteful number, since it uses less digits than its factorization.

61356101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658310.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 61356101 is about 7833.0135324791. The cubic root of 61356101 is about 394.4142383329.

The spelling of 61356101 in words is "sixty-one million, three hundred fifty-six thousand, one hundred one".