61554542 has 16 divisors (see below), whose sum is σ = 106330752. Its totient is φ = 26178360.

The previous prime is 61554539. The next prime is 61554553. The reversal of 61554542 is 24545516.

It is a junction number, because it is equal to n+sod(n) for n = 61554499 and 61554508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14948 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (6645672).

Almost surely, 2^61554542 is an apocalyptic number.

61554542 is a deficient number, since it is larger than the sum of its proper divisors (44776210).

61554542 is a wasteful number, since it uses less digits than its factorization.

61554542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33703.

The product of its digits is 24000, while the sum is 32.

The square root of 61554542 is about 7845.6702709201. The cubic root of 61554542 is about 394.8389922231.

The spelling of 61554542 in words is "sixty-one million, five hundred fifty-four thousand, five hundred forty-two".