1971054 has 40 divisors (see below), whose sum is σ = 4617360. Its totient is φ = 628452.

The previous prime is 1971049. The next prime is 1971091. The reversal of 1971054 is 4501791.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 85687 + ... + 85709.

It is an arithmetic number, because the mean of its divisors is an integer number (115434).

2^1971054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1971054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2308680).

1971054 is an abundant number, since it is smaller than the sum of its proper divisors (2646306).

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

1971054 is an frugal number, since it uses more digits than its factorization.

1971054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1971054 is about 1403.9423065069. The cubic root of 1971054 is about 125.3813209054.

The spelling of 1971054 in words is "one million, nine hundred seventy-one thousand, fifty-four".