61513061 has 2 divisors, whose sum is σ = 61513062. Its totient is φ = 61513060.

The previous prime is 61513057. The next prime is 61513097. The reversal of 61513061 is 16031516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60996100 + 516961 = 7810^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 61513061 - 2² = 61513057 is a prime.

It is a super-3 number, since 3×61513061³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61513261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30756530 + 30756531.

It is an arithmetic number, because the mean of its divisors is an integer number (30756531).

Almost surely, 2^61513061 is an apocalyptic number.

It is an amenable number.

61513061 is a deficient number, since it is larger than the sum of its proper divisors (1).

61513061 is an equidigital number, since it uses as much as digits as its factorization.

61513061 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61513061 is about 7843.0262654157. The cubic root of 61513061 is about 394.7502795890.

Adding to 61513061 its reverse (16031516), we get a palindrome (77544577).

The spelling of 61513061 in words is "sixty-one million, five hundred thirteen thousand, sixty-one".