61552463 has 4 divisors (see below), whose sum is σ = 70345680. Its totient is φ = 52759248.

The previous prime is 61552459. The next prime is 61552481. The reversal of 61552463 is 36425516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61552463 - 2² = 61552459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61552483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396598 + ... + 4396611.

It is an arithmetic number, because the mean of its divisors is an integer number (17586420).

Almost surely, 2^61552463 is an apocalyptic number.

61552463 is a deficient number, since it is larger than the sum of its proper divisors (8793217).

61552463 is an equidigital number, since it uses as much as digits as its factorization.

61552463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793216.

The product of its digits is 21600, while the sum is 32.

The square root of 61552463 is about 7845.5377763414. The cubic root of 61552463 is about 394.8345469540.

Adding to 61552463 its reverse (36425516), we get a palindrome (97977979).

The spelling of 61552463 in words is "sixty-one million, five hundred fifty-two thousand, four hundred sixty-three".