55158501 has 8 divisors (see below), whose sum is σ = 77415520. Its totient is φ = 34836912.

The previous prime is 55158479. The next prime is 55158541. The reversal of 55158501 is 10585155.

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

It is not a de Polignac number, because 55158501 - 2⁶ = 55158437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55158541) 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, 483790 + ... + 483903.

It is an arithmetic number, because the mean of its divisors is an integer number (9676940).

Almost surely, 2^55158501 is an apocalyptic number.

It is an amenable number.

55158501 is a deficient number, since it is larger than the sum of its proper divisors (22257019).

55158501 is a wasteful number, since it uses less digits than its factorization.

55158501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967715.

The product of its (nonzero) digits is 5000, while the sum is 30.

The square root of 55158501 is about 7426.8769344860. The cubic root of 55158501 is about 380.6602119327.

The spelling of 55158501 in words is "fifty-five million, one hundred fifty-eight thousand, five hundred one".