61554799 has 4 divisors (see below), whose sum is σ = 62421840. Its totient is φ = 60687760.

The previous prime is 61554797. The next prime is 61554811. The reversal of 61554799 is 99745516.

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 61554799 - 2¹ = 61554797 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 (61554793) 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, 433414 + ... + 433555.

It is an arithmetic number, because the mean of its divisors is an integer number (15605460).

Almost surely, 2^61554799 is an apocalyptic number.

61554799 is a deficient number, since it is larger than the sum of its proper divisors (867041).

61554799 is an equidigital number, since it uses as much as digits as its factorization.

61554799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867040.

The product of its digits is 340200, while the sum is 46.

The square root of 61554799 is about 7845.6866493635. The cubic root of 61554799 is about 394.8395417275.

The spelling of 61554799 in words is "sixty-one million, five hundred fifty-four thousand, seven hundred ninety-nine".