55415901 has 16 divisors (see below), whose sum is σ = 78257664. Its totient is φ = 34807344.

The previous prime is 55415881. The next prime is 55415909. The reversal of 55415901 is 10951455.

It is not a de Polignac number, because 55415901 - 2¹⁴ = 55399517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371 + ... + 10616.

It is an arithmetic number, because the mean of its divisors is an integer number (4891104).

Almost surely, 2^55415901 is an apocalyptic number.

It is an amenable number.

55415901 is a deficient number, since it is larger than the sum of its proper divisors (22841763).

55415901 is a wasteful number, since it uses less digits than its factorization.

55415901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12080.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 55415901 is about 7444.1857177263. The cubic root of 55415901 is about 381.2514167823.

The spelling of 55415901 in words is "fifty-five million, four hundred fifteen thousand, nine hundred one".