55851457 has 8 divisors (see below), whose sum is σ = 56450592. Its totient is φ = 55255200.

The previous prime is 55851449. The next prime is 55851473. The reversal of 55851457 is 75415855.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55851457 - 2³ = 55851449 is a prime.

It is a super-3 number, since 3×55851457³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55851437) 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, 80482 + ... + 81172.

It is an arithmetic number, because the mean of its divisors is an integer number (7056324).

Almost surely, 2^55851457 is an apocalyptic number.

It is an amenable number.

55851457 is a deficient number, since it is larger than the sum of its proper divisors (599135).

55851457 is a wasteful number, since it uses less digits than its factorization.

55851457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439.

The product of its digits is 140000, while the sum is 40.

The square root of 55851457 is about 7473.3832365268. The cubic root of 55851457 is about 382.2476601844.

The spelling of 55851457 in words is "fifty-five million, eight hundred fifty-one thousand, four hundred fifty-seven".