61523012 has 6 divisors (see below), whose sum is σ = 107665278. Its totient is φ = 30761504.

The previous prime is 61523009. The next prime is 61523023. The reversal of 61523012 is 21032516.

It can be written as a sum of positive squares in only one way, i.e., 47803396 + 13719616 = 6914^2 + 3704^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7690373 + ... + 7690380.

It is an arithmetic number, because the mean of its divisors is an integer number (17944213).

Almost surely, 2^61523012 is an apocalyptic number.

It is an amenable number.

61523012 is a deficient number, since it is larger than the sum of its proper divisors (46142266).

61523012 is a wasteful number, since it uses less digits than its factorization.

61523012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380757 (or 15380755 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 61523012 is about 7843.6606249888. The cubic root of 61523012 is about 394.7715647609.

Adding to 61523012 its reverse (21032516), we get a palindrome (82555528).

The spelling of 61523012 in words is "sixty-one million, five hundred twenty-three thousand, twelve".