61012481 has 2 divisors, whose sum is σ = 61012482. Its totient is φ = 61012480.

The previous prime is 61012459. The next prime is 61012489. The reversal of 61012481 is 18421016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41731600 + 19280881 = 6460^2 + 4391^2 .

It is a cyclic number.

It is not a de Polignac number, because 61012481 - 2⁶ = 61012417 is a prime.

It is a super-2 number, since 2×61012481² = 7445045675550722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61012489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30506240 + 30506241.

It is an arithmetic number, because the mean of its divisors is an integer number (30506241).

Almost surely, 2^61012481 is an apocalyptic number.

It is an amenable number.

61012481 is a deficient number, since it is larger than the sum of its proper divisors (1).

61012481 is an equidigital number, since it uses as much as digits as its factorization.

61012481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 61012481 is about 7811.0486491892. The cubic root of 61012481 is about 393.6765642506.

Adding to 61012481 its reverse (18421016), we get a palindrome (79433497).

The spelling of 61012481 in words is "sixty-one million, twelve thousand, four hundred eighty-one".