55287739 has 8 divisors (see below), whose sum is σ = 62674640. Its totient is φ = 48348576.

The previous prime is 55287737. The next prime is 55287761. The reversal of 55287739 is 93778255.

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

It is a cyclic number.

It is not a de Polignac number, because 55287739 - 2¹ = 55287737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55287737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111672 + ... + 112165.

It is an arithmetic number, because the mean of its divisors is an integer number (7834330).

Almost surely, 2^55287739 is an apocalyptic number.

55287739 is a deficient number, since it is larger than the sum of its proper divisors (7386901).

55287739 is a wasteful number, since it uses less digits than its factorization.

55287739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223869.

The product of its digits is 529200, while the sum is 46.

The square root of 55287739 is about 7435.5725401612. The cubic root of 55287739 is about 380.9572794209.

The spelling of 55287739 in words is "fifty-five million, two hundred eighty-seven thousand, seven hundred thirty-nine".