61345458 has 32 divisors (see below), whose sum is σ = 136768320. Its totient is φ = 20381760.

The previous prime is 61345451. The next prime is 61345463. The reversal of 61345458 is 85454316.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61345451) 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, 16513 + ... + 19883.

It is an arithmetic number, because the mean of its divisors is an integer number (4274010).

Almost surely, 2^61345458 is an apocalyptic number.

61345458 is an abundant number, since it is smaller than the sum of its proper divisors (75422862).

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

61345458 is a wasteful number, since it uses less digits than its factorization.

61345458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3713 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 61345458 is about 7832.3341348541. The cubic root of 61345458 is about 394.3914316170.

The spelling of 61345458 in words is "sixty-one million, three hundred forty-five thousand, four hundred fifty-eight".