54977990 has 8 divisors (see below), whose sum is σ = 98960400. Its totient is φ = 21991192.

The previous prime is 54977971. The next prime is 54977999. The reversal of 54977990 is 9977945.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54977999) 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, 2748890 + ... + 2748909.

It is an arithmetic number, because the mean of its divisors is an integer number (12370050).

Almost surely, 2^54977990 is an apocalyptic number.

54977990 is a deficient number, since it is larger than the sum of its proper divisors (43982410).

54977990 is a wasteful number, since it uses less digits than its factorization.

54977990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497806.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 54977990 is about 7414.7144247098. The cubic root of 54977990 is about 380.2445102267.

The spelling of 54977990 in words is "fifty-four million, nine hundred seventy-seven thousand, nine hundred ninety".