61205061 has 8 divisors (see below), whose sum is σ = 85901920. Its totient is φ = 38655792.

The previous prime is 61205057. The next prime is 61205119. The reversal of 61205061 is 16050216.

It is a happy number.

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

It is not a de Polignac number, because 61205061 - 2² = 61205057 is a prime.

It is a super-3 number, since 3×61205061³ (a number of 24 digits) contains 333 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 (61207061) 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, 536830 + ... + 536943.

It is an arithmetic number, because the mean of its divisors is an integer number (10737740).

Almost surely, 2^61205061 is an apocalyptic number.

It is an amenable number.

61205061 is a deficient number, since it is larger than the sum of its proper divisors (24696859).

61205061 is a wasteful number, since it uses less digits than its factorization.

61205061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073795.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 61205061 is about 7823.3663470401. The cubic root of 61205061 is about 394.0903298950.

Adding to 61205061 its reverse (16050216), we get a palindrome (77255277).

The spelling of 61205061 in words is "sixty-one million, two hundred five thousand, sixty-one".