61498543 has 4 divisors (see below), whose sum is σ = 61542720. Its totient is φ = 61454368.

The previous prime is 61498523. The next prime is 61498583. The reversal of 61498543 is 34589416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61498543 is a prime.

It is a super-2 number, since 2×61498543² = 7564141582245698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61498496 and 61498505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61498523) 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, 19930 + ... + 22807.

It is an arithmetic number, because the mean of its divisors is an integer number (15385680).

Almost surely, 2^61498543 is an apocalyptic number.

61498543 is a deficient number, since it is larger than the sum of its proper divisors (44177).

61498543 is a wasteful number, since it uses less digits than its factorization.

61498543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44176.

The product of its digits is 103680, while the sum is 40.

The square root of 61498543 is about 7842.1006752018. The cubic root of 61498543 is about 394.7192214940.

The spelling of 61498543 in words is "sixty-one million, four hundred ninety-eight thousand, five hundred forty-three".