61145496 has 128 divisors (see below), whose sum is σ = 183168000. Its totient is φ = 18838656.

The previous prime is 61145467. The next prime is 61145507. The reversal of 61145496 is 69454116.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61145496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192730 + ... + 193046.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^61145496 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 61145496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91584000).

61145496 is an abundant number, since it is smaller than the sum of its proper divisors (122022504).

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

61145496 is a wasteful number, since it uses less digits than its factorization.

61145496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 388 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 61145496 is about 7819.5585553150. The cubic root of 61145496 is about 393.9624449934.

The spelling of 61145496 in words is "sixty-one million, one hundred forty-five thousand, four hundred ninety-six".