61381652 has 6 divisors (see below), whose sum is σ = 107417898. Its totient is φ = 30690824.

The previous prime is 61381627. The next prime is 61381667. The reversal of 61381652 is 25618316.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 16679056 = 6686^2 + 4084^2 .

It is a congruent number.

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, 7672703 + ... + 7672710.

It is an arithmetic number, because the mean of its divisors is an integer number (17902983).

Almost surely, 2^61381652 is an apocalyptic number.

It is an amenable number.

61381652 is a deficient number, since it is larger than the sum of its proper divisors (46036246).

61381652 is a wasteful number, since it uses less digits than its factorization.

61381652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15345417 (or 15345415 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 61381652 is about 7834.6443441933. The cubic root of 61381652 is about 394.4689804012.

Adding to 61381652 its reverse (25618316), we get a palindrome (86999968).

The spelling of 61381652 in words is "sixty-one million, three hundred eighty-one thousand, six hundred fifty-two".