61553363 has 8 divisors (see below), whose sum is σ = 62208960. Its totient is φ = 60900840.

The previous prime is 61553347. The next prime is 61553377. The reversal of 61553363 is 36335516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61553363 - 2⁴ = 61553347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61553563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71228 + ... + 72086.

It is an arithmetic number, because the mean of its divisors is an integer number (7776120).

Almost surely, 2^61553363 is an apocalyptic number.

61553363 is a deficient number, since it is larger than the sum of its proper divisors (655597).

61553363 is a wasteful number, since it uses less digits than its factorization.

61553363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537.

The product of its digits is 24300, while the sum is 32.

The square root of 61553363 is about 7845.5951335765. The cubic root of 61553363 is about 394.8364713252.

Adding to 61553363 its reverse (36335516), we get a palindrome (97888879).

It can be divided in two parts, 61553 and 363, that added together give a palindrome (61916).

The spelling of 61553363 in words is "sixty-one million, five hundred fifty-three thousand, three hundred sixty-three".