61554763 has 4 divisors (see below), whose sum is σ = 61635168. Its totient is φ = 61474360.

The previous prime is 61554761. The next prime is 61554767. The reversal of 61554763 is 36745516.

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 61554763 - 2¹ = 61554761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61554761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39043 + ... + 40588.

It is an arithmetic number, because the mean of its divisors is an integer number (15408792).

Almost surely, 2^61554763 is an apocalyptic number.

61554763 is a deficient number, since it is larger than the sum of its proper divisors (80405).

61554763 is an equidigital number, since it uses as much as digits as its factorization.

61554763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80404.

The product of its digits is 75600, while the sum is 37.

The square root of 61554763 is about 7845.6843551089. The cubic root of 61554763 is about 394.8394647542.

The spelling of 61554763 in words is "sixty-one million, five hundred fifty-four thousand, seven hundred sixty-three".