53021404 has 6 divisors (see below), whose sum is σ = 92787464. Its totient is φ = 26510700.

The previous prime is 53021393. The next prime is 53021431. The reversal of 53021404 is 40412035.

It is a super-3 number, since 3×53021404³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6627672 + ... + 6627679.

Almost surely, 2^53021404 is an apocalyptic number.

It is an amenable number.

53021404 is a deficient number, since it is larger than the sum of its proper divisors (39766060).

53021404 is a wasteful number, since it uses less digits than its factorization.

53021404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13255355 (or 13255353 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 53021404 is about 7281.5797736480. The cubic root of 53021404 is about 375.6791343653.

Adding to 53021404 its reverse (40412035), we get a palindrome (93433439).

The spelling of 53021404 in words is "fifty-three million, twenty-one thousand, four hundred four".