61540254 has 24 divisors (see below), whose sum is σ = 133505112. Its totient is φ = 20487600.

The previous prime is 61540247. The next prime is 61540279. The reversal of 61540254 is 45204516.

61540254 is a `hidden beast` number, since 615 + 40 + 2 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17292 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (5562713).

Almost surely, 2^61540254 is an apocalyptic number.

61540254 is an abundant number, since it is smaller than the sum of its proper divisors (71964858).

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

61540254 is a wasteful number, since it uses less digits than its factorization.

61540254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 61540254 is about 7844.7596521500. The cubic root of 61540254 is about 394.8084399362.

The spelling of 61540254 in words is "sixty-one million, five hundred forty thousand, two hundred fifty-four".