55518370 has 8 divisors (see below), whose sum is σ = 99933084. Its totient is φ = 22207344.

The previous prime is 55518367. The next prime is 55518373. The reversal of 55518370 is 7381555.

It is an interprime number because it is at equal distance from previous prime (55518367) and next prime (55518373).

It can be written as a sum of positive squares in 2 ways, for example, as 55190041 + 328329 = 7429^2 + 573^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55518373) 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, 2775909 + ... + 2775928.

Almost surely, 2^55518370 is an apocalyptic number.

55518370 is a deficient number, since it is larger than the sum of its proper divisors (44414714).

55518370 is a wasteful number, since it uses less digits than its factorization.

55518370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551844.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 55518370 is about 7451.0650245451. The cubic root of 55518370 is about 381.4862615128.

The spelling of 55518370 in words is "fifty-five million, five hundred eighteen thousand, three hundred seventy".