55440158 has 8 divisors (see below), whose sum is σ = 85094328. Its totient is φ = 27075384.

The previous prime is 55440149. The next prime is 55440167. The reversal of 55440158 is 85104455.

It is an interprime number because it is at equal distance from previous prime (55440149) and next prime (55440167).

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

It is a super-2 number, since 2×55440158² = 6147222238129928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322241 + ... + 322412.

It is an arithmetic number, because the mean of its divisors is an integer number (10636791).

Almost surely, 2^55440158 is an apocalyptic number.

55440158 is a deficient number, since it is larger than the sum of its proper divisors (29654170).

55440158 is a wasteful number, since it uses less digits than its factorization.

55440158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644698.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 55440158 is about 7445.8147975893. The cubic root of 55440158 is about 381.3070365979.

The spelling of 55440158 in words is "fifty-five million, four hundred forty thousand, one hundred fifty-eight".