1642554 has 12 divisors (see below), whose sum is σ = 3558906. Its totient is φ = 547512.

The previous prime is 1642549. The next prime is 1642559. The reversal of 1642554 is 4552461.

It is an interprime number because it is at equal distance from previous prime (1642549) and next prime (1642559).

It can be written as a sum of positive squares in only one way, i.e., 859329 + 783225 = 927^2 + 885^2 .

It is not an unprimeable number, because it can be changed into a prime (1642559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45609 + ... + 45644.

2^1642554 is an apocalyptic number.

1642554 is an abundant number, since it is smaller than the sum of its proper divisors (1916352).

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

1642554 is a wasteful number, since it uses less digits than its factorization.

1642554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91261 (or 91258 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1642554 is about 1281.6216290310. The cubic root of 1642554 is about 117.9885558182.

The spelling of 1642554 in words is "one million, six hundred forty-two thousand, five hundred fifty-four".