61155043 has 4 divisors (see below), whose sum is σ = 62807920. Its totient is φ = 59502168.

The previous prime is 61155023. The next prime is 61155047. The reversal of 61155043 is 34055116.

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 61155043 - 2⁵ = 61155011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61154999 and 61155017.

It is not an unprimeable number, because it can be changed into a prime (61155047) 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, 826383 + ... + 826456.

It is an arithmetic number, because the mean of its divisors is an integer number (15701980).

Almost surely, 2^61155043 is an apocalyptic number.

61155043 is a deficient number, since it is larger than the sum of its proper divisors (1652877).

61155043 is a wasteful number, since it uses less digits than its factorization.

61155043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652876.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 61155043 is about 7820.1689879439. The cubic root of 61155043 is about 393.9829478049.

The spelling of 61155043 in words is "sixty-one million, one hundred fifty-five thousand, forty-three".