61555486 has 8 divisors (see below), whose sum is σ = 92534904. Its totient is φ = 30710520.

The previous prime is 61555471. The next prime is 61555493. The reversal of 61555486 is 68455516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32460 + ... + 34303.

It is an arithmetic number, because the mean of its divisors is an integer number (11566863).

Almost surely, 2^61555486 is an apocalyptic number.

61555486 is a deficient number, since it is larger than the sum of its proper divisors (30979418).

61555486 is a wasteful number, since it uses less digits than its factorization.

61555486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67226.

The product of its digits is 144000, while the sum is 40.

The square root of 61555486 is about 7845.7304312600. The cubic root of 61555486 is about 394.8410106287.

The spelling of 61555486 in words is "sixty-one million, five hundred fifty-five thousand, four hundred eighty-six".