61145451 has 12 divisors (see below), whose sum is σ = 88772112. Its totient is φ = 40555536.

The previous prime is 61145437. The next prime is 61145453. The reversal of 61145451 is 15454116.

61145451 is a `hidden beast` number, since 6 + 114 + 545 + 1 = 666.

61145451 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 61145451 - 2⁵ = 61145419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61145453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15471 + ... + 19016.

It is an arithmetic number, because the mean of its divisors is an integer number (7397676).

Almost surely, 2^61145451 is an apocalyptic number.

61145451 is a deficient number, since it is larger than the sum of its proper divisors (27626661).

61145451 is a wasteful number, since it uses less digits than its factorization.

61145451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34690 (or 34687 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 61145451 is about 7819.5556779142. Note that the first 3 decimals coincide. The cubic root of 61145451 is about 393.9623483479.

Adding to 61145451 its reverse (15454116), we get a palindrome (76599567).

The spelling of 61145451 in words is "sixty-one million, one hundred forty-five thousand, four hundred fifty-one".