53020351 has 4 divisors (see below), whose sum is σ = 53168400. Its totient is φ = 52872304.

The previous prime is 53020307. The next prime is 53020361. The reversal of 53020351 is 15302035.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53020351 - 2¹³ = 53012159 is a prime.

It is a super-2 number, since 2×53020351² = 5622315240326402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020361) 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, 73486 + ... + 74203.

It is an arithmetic number, because the mean of its divisors is an integer number (13292100).

Almost surely, 2^53020351 is an apocalyptic number.

53020351 is a deficient number, since it is larger than the sum of its proper divisors (148049).

53020351 is a wasteful number, since it uses less digits than its factorization.

53020351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148048.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 53020351 is about 7281.5074675509. The cubic root of 53020351 is about 375.6766473649.

Adding to 53020351 its reverse (15302035), we get a palindrome (68322386).

The spelling of 53020351 in words is "fifty-three million, twenty thousand, three hundred fifty-one".