61254543 has 32 divisors (see below), whose sum is σ = 100564992. Its totient is φ = 32392800.

The previous prime is 61254539. The next prime is 61254547. The reversal of 61254543 is 34545216.

It is an interprime number because it is at equal distance from previous prime (61254539) and next prime (61254547).

It is not a de Polignac number, because 61254543 - 2² = 61254539 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61254543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61254547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12928 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (3142656).

Almost surely, 2^61254543 is an apocalyptic number.

61254543 is a deficient number, since it is larger than the sum of its proper divisors (39310449).

61254543 is a wasteful number, since it uses less digits than its factorization.

61254543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155.

The product of its digits is 14400, while the sum is 30.

The square root of 61254543 is about 7826.5281574910. The cubic root of 61254543 is about 394.1965037126.

Adding to 61254543 its reverse (34545216), we get a palindrome (95799759).

It can be divided in two parts, 612 and 54543, that added together give a palindrome (55155).

The spelling of 61254543 in words is "sixty-one million, two hundred fifty-four thousand, five hundred forty-three".