55771742 has 8 divisors (see below), whose sum is σ = 90092856. Its totient is φ = 25740792.

The previous prime is 55771739. The next prime is 55771753. The reversal of 55771742 is 24717755.

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

It is a super-2 number, since 2×55771742² = 6220974411429128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55771696 and 55771705.

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, 1072508 + ... + 1072559.

It is an arithmetic number, because the mean of its divisors is an integer number (11261607).

Almost surely, 2^55771742 is an apocalyptic number.

55771742 is a deficient number, since it is larger than the sum of its proper divisors (34321114).

55771742 is a wasteful number, since it uses less digits than its factorization.

55771742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145082.

The product of its digits is 68600, while the sum is 38.

The square root of 55771742 is about 7468.0480716182. The cubic root of 55771742 is about 382.0657169724.

The spelling of 55771742 in words is "fifty-five million, seven hundred seventy-one thousand, seven hundred forty-two".