53021746 has 8 divisors (see below), whose sum is σ = 79621020. Its totient is φ = 26481408.

The previous prime is 53021743. The next prime is 53021753. The reversal of 53021746 is 64712035.

It can be written as a sum of positive squares in 2 ways, for example, as 39250225 + 13771521 = 6265^2 + 3711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×53021746² = 5622611097777032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53021743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12411 + ... + 16126.

Almost surely, 2^53021746 is an apocalyptic number.

53021746 is a deficient number, since it is larger than the sum of its proper divisors (26599274).

53021746 is a wasteful number, since it uses less digits than its factorization.

53021746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29468.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 53021746 is about 7281.6032575251. The cubic root of 53021746 is about 375.6799421019.

The spelling of 53021746 in words is "fifty-three million, twenty-one thousand, seven hundred forty-six".