61106520 has 32 divisors (see below), whose sum is σ = 183319920. Its totient is φ = 16295040.

The previous prime is 61106503. The next prime is 61106543. The reversal of 61106520 is 2560116.

It is a happy number.

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, 254491 + ... + 254730.

Almost surely, 2^61106520 is an apocalyptic number.

61106520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61106520 is an abundant number, since it is smaller than the sum of its proper divisors (122213400).

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

61106520 is a wasteful number, since it uses less digits than its factorization.

61106520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509235 (or 509231 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 61106520 is about 7817.0659457369. The cubic root of 61106520 is about 393.8787193171.

Adding to 61106520 its reverse (2560116), we get a palindrome (63666636).

The spelling of 61106520 in words is "sixty-one million, one hundred six thousand, five hundred twenty".