55415597 has 8 divisors (see below), whose sum is σ = 58765176. Its totient is φ = 52076032.

The previous prime is 55415593. The next prime is 55415617. The reversal of 55415597 is 79551455.

It can be written as a sum of positive squares in 4 ways, for example, as 12630916 + 42784681 = 3554^2 + 6541^2 .

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

It is not a de Polignac number, because 55415597 - 2² = 55415593 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 (55415593) 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, 11033 + ... + 15249.

It is an arithmetic number, because the mean of its divisors is an integer number (7345647).

Almost surely, 2^55415597 is an apocalyptic number.

It is an amenable number.

55415597 is a deficient number, since it is larger than the sum of its proper divisors (3349579).

55415597 is a wasteful number, since it uses less digits than its factorization.

55415597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007.

The product of its digits is 157500, while the sum is 41.

The square root of 55415597 is about 7444.1652990782. The cubic root of 55415597 is about 381.2507196260.

The spelling of 55415597 in words is "fifty-five million, four hundred fifteen thousand, five hundred ninety-seven".