55350591 has 8 divisors (see below), whose sum is σ = 77685120. Its totient is φ = 34958232.

The previous prime is 55350569. The next prime is 55350599. The reversal of 55350591 is 19505355.

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

It is not a de Polignac number, because 55350591 - 2¹⁸ = 55088447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55350599) 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, 485475 + ... + 485588.

It is an arithmetic number, because the mean of its divisors is an integer number (9710640).

Almost surely, 2^55350591 is an apocalyptic number.

55350591 is a deficient number, since it is larger than the sum of its proper divisors (22334529).

55350591 is a wasteful number, since it uses less digits than its factorization.

55350591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971085.

The product of its (nonzero) digits is 16875, while the sum is 33.

The square root of 55350591 is about 7439.7977795099. The cubic root of 55350591 is about 381.1015842270.

The spelling of 55350591 in words is "fifty-five million, three hundred fifty thousand, five hundred ninety-one".