55153489 has 4 divisors (see below), whose sum is σ = 55574640. Its totient is φ = 54732340.

The previous prime is 55153481. The next prime is 55153493. The reversal of 55153489 is 98435155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55153489 - 2³ = 55153481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55153481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210379 + ... + 210640.

It is an arithmetic number, because the mean of its divisors is an integer number (13893660).

Almost surely, 2^55153489 is an apocalyptic number.

It is an amenable number.

55153489 is a deficient number, since it is larger than the sum of its proper divisors (421151).

55153489 is a wasteful number, since it uses less digits than its factorization.

55153489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421150.

The product of its digits is 108000, while the sum is 40.

The square root of 55153489 is about 7426.5395036989. The cubic root of 55153489 is about 380.6486819676.

The spelling of 55153489 in words is "fifty-five million, one hundred fifty-three thousand, four hundred eighty-nine".