61900550 has 24 divisors (see below), whose sum is σ = 116331096. Its totient is φ = 24503040.

The previous prime is 61900541. The next prime is 61900633. The reversal of 61900550 is 5500916.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (4847129).

Almost surely, 2^61900550 is an apocalyptic number.

61900550 is a deficient number, since it is larger than the sum of its proper divisors (54430546).

61900550 is a wasteful number, since it uses less digits than its factorization.

61900550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12872 (or 12867 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 61900550 is about 7867.6902582651. The cubic root of 61900550 is about 395.5774281917.

The spelling of 61900550 in words is "sixty-one million, nine hundred thousand, five hundred fifty".