61005030 has 32 divisors (see below), whose sum is σ = 146635488. Its totient is φ = 16243200.

The previous prime is 61005001. The next prime is 61005031. The reversal of 61005030 is 3050016.

It is a super-2 number, since 2×61005030² = 7443227370601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61005031) 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, 27150 + ... + 29310.

It is an arithmetic number, because the mean of its divisors is an integer number (4582359).

Almost surely, 2^61005030 is an apocalyptic number.

61005030 is an abundant number, since it is smaller than the sum of its proper divisors (85630458).

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

61005030 is a wasteful number, since it uses less digits than its factorization.

61005030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 61005030 is about 7810.5716820217. The cubic root of 61005030 is about 393.6605380024.

Adding to 61005030 its reverse (3050016), we get a palindrome (64055046).

The spelling of 61005030 in words is "sixty-one million, five thousand, thirty".