55551742 has 4 divisors (see below), whose sum is σ = 83327616. Its totient is φ = 27775870.

The previous prime is 55551737. The next prime is 55551799. The reversal of 55551742 is 24715555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24715555 = 5 ⋅4943111.

It is a junction number, because it is equal to n+sod(n) for n = 55551698 and 55551707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887934 + ... + 13887937.

It is an arithmetic number, because the mean of its divisors is an integer number (20831904).

Almost surely, 2^55551742 is an apocalyptic number.

55551742 is a deficient number, since it is larger than the sum of its proper divisors (27775874).

55551742 is a wasteful number, since it uses less digits than its factorization.

55551742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775873.

The product of its digits is 35000, while the sum is 34.

The square root of 55551742 is about 7453.3040995253. The cubic root of 55551742 is about 381.5626831219.

The spelling of 55551742 in words is "fifty-five million, five hundred fifty-one thousand, seven hundred forty-two".