43051972 has 6 divisors (see below), whose sum is σ = 75340958. Its totient is φ = 21525984.

The previous prime is 43051961. The next prime is 43051991. The reversal of 43051972 is 27915034.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 749956 = 6504^2 + 866^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5381493 + ... + 5381500.

Almost surely, 2^43051972 is an apocalyptic number.

It is an amenable number.

43051972 is a deficient number, since it is larger than the sum of its proper divisors (32288986).

43051972 is a wasteful number, since it uses less digits than its factorization.

43051972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10762997 (or 10762995 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 43051972 is about 6561.4001554546. The cubic root of 43051972 is about 350.4808954160.

The spelling of 43051972 in words is "forty-three million, fifty-one thousand, nine hundred seventy-two".