61554345 has 16 divisors (see below), whose sum is σ = 99445632. Its totient is φ = 32509440.

The previous prime is 61554293. The next prime is 61554401. The reversal of 61554345 is 54345516.

It is not a de Polignac number, because 61554345 - 2¹² = 61550249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18376 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (6215352).

Almost surely, 2^61554345 is an apocalyptic number.

It is an amenable number.

61554345 is a deficient number, since it is larger than the sum of its proper divisors (37891287).

61554345 is a wasteful number, since it uses less digits than its factorization.

61554345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39952.

The product of its digits is 36000, while the sum is 33.

The square root of 61554345 is about 7845.6577162147. The cubic root of 61554345 is about 394.8385710066.

The spelling of 61554345 in words is "sixty-one million, five hundred fifty-four thousand, three hundred forty-five".