61456550 has 12 divisors (see below), whose sum is σ = 114309276. Its totient is φ = 24582600.

The previous prime is 61456543. The next prime is 61456553. The reversal of 61456550 is 5565416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61456553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 614516 + ... + 614615.

It is an arithmetic number, because the mean of its divisors is an integer number (9525773).

Almost surely, 2^61456550 is an apocalyptic number.

61456550 is a deficient number, since it is larger than the sum of its proper divisors (52852726).

61456550 is a wasteful number, since it uses less digits than its factorization.

61456550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229143 (or 1229138 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 61456550 is about 7839.4228103860. The cubic root of 61456550 is about 394.6293591026.

The spelling of 61456550 in words is "sixty-one million, four hundred fifty-six thousand, five hundred fifty".