61505082 has 80 divisors (see below), whose sum is σ = 152425152. Its totient is φ = 18437760.

The previous prime is 61505057. The next prime is 61505083. The reversal of 61505082 is 28050516.

61505082 is a `hidden beast` number, since 6 + 150 + 508 + 2 = 666.

It is a super-2 number, since 2×61505082² = 7565750223653448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61505083) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62857 + ... + 63827.

Almost surely, 2^61505082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61505082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76212576).

61505082 is an abundant number, since it is smaller than the sum of its proper divisors (90920070).

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

61505082 is a wasteful number, since it uses less digits than its factorization.

61505082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 61505082 is about 7842.5175804712. The cubic root of 61505082 is about 394.7332108634.

Adding to 61505082 its reverse (28050516), we get a palindrome (89555598).

The spelling of 61505082 in words is "sixty-one million, five hundred five thousand, eighty-two".