61155084 has 48 divisors (see below), whose sum is σ = 150796800. Its totient is φ = 19258176.

The previous prime is 61155049. The next prime is 61155089. The reversal of 61155084 is 48055116.

It is not an unprimeable number, because it can be changed into a prime (61155089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14487 + ... + 18225.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^61155084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61155084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75398400).

61155084 is an abundant number, since it is smaller than the sum of its proper divisors (89641716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61155084 is a wasteful number, since it uses less digits than its factorization.

61155084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 61155084 is about 7820.1716093702. The cubic root of 61155084 is about 393.9830358505.

The spelling of 61155084 in words is "sixty-one million, one hundred fifty-five thousand, eighty-four".