55351983 has 32 divisors (see below), whose sum is σ = 80607744. Its totient is φ = 33656832.

The previous prime is 55351979. The next prime is 55351987. The reversal of 55351983 is 38915355.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55351979) and next prime (55351987).

It is not a de Polignac number, because 55351983 - 2² = 55351979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55351987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331366 + ... + 331532.

It is an arithmetic number, because the mean of its divisors is an integer number (2518992).

Almost surely, 2^55351983 is an apocalyptic number.

55351983 is a deficient number, since it is larger than the sum of its proper divisors (25255761).

55351983 is a wasteful number, since it uses less digits than its factorization.

55351983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 81000, while the sum is 39.

The square root of 55351983 is about 7439.8913298515. The cubic root of 55351983 is about 381.1047789472.

The spelling of 55351983 in words is "fifty-five million, three hundred fifty-one thousand, nine hundred eighty-three".