54961816 has 64 divisors (see below), whose sum is σ = 134326080. Its totient is φ = 20459520.

The previous prime is 54961787. The next prime is 54961817. The reversal of 54961816 is 61816945.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54961817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10156 + ... + 14596.

It is an arithmetic number, because the mean of its divisors is an integer number (2098845).

Almost surely, 2^54961816 is an apocalyptic number.

54961816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54961816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67163040).

54961816 is an abundant number, since it is smaller than the sum of its proper divisors (79364264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54961816 is a wasteful number, since it uses less digits than its factorization.

54961816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484 (or 4480 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 54961816 is about 7413.6236753696. The cubic root of 54961816 is about 380.2072184674.

The spelling of 54961816 in words is "fifty-four million, nine hundred sixty-one thousand, eight hundred sixteen".