1641572 has 6 divisors (see below), whose sum is σ = 2872758. Its totient is φ = 820784.

The previous prime is 1641559. The next prime is 1641583. The reversal of 1641572 is 2751461.

It can be written as a sum of positive squares in only one way, i.e., 1623076 + 18496 = 1274^2 + 136^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205193 + ... + 205200.

It is an arithmetic number, because the mean of its divisors is an integer number (478793).

2^1641572 is an apocalyptic number.

It is an amenable number.

1641572 is a deficient number, since it is larger than the sum of its proper divisors (1231186).

1641572 is a wasteful number, since it uses less digits than its factorization.

1641572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410397 (or 410395 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1641572 is about 1281.2384633627. The cubic root of 1641572 is about 117.9650379999.

The spelling of 1641572 in words is "one million, six hundred forty-one thousand, five hundred seventy-two".