61145512 has 16 divisors (see below), whose sum is σ = 115701300. Its totient is φ = 30291840.

The previous prime is 61145509. The next prime is 61145531. The reversal of 61145512 is 21554116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59691076 + 1454436 = 7726^2 + 1206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34189 + ... + 35932.

Almost surely, 2^61145512 is an apocalyptic number.

It is an amenable number.

61145512 is a deficient number, since it is larger than the sum of its proper divisors (54555788).

61145512 is a wasteful number, since it uses less digits than its factorization.

61145512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70236 (or 70232 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 61145512 is about 7819.5595783906. The cubic root of 61145512 is about 393.9624793562.

Adding to 61145512 its reverse (21554116), we get a palindrome (82699628).

The spelling of 61145512 in words is "sixty-one million, one hundred forty-five thousand, five hundred twelve".