53621469 has 12 divisors (see below), whose sum is σ = 84494592. Its totient is φ = 32497800.

The previous prime is 53621467. The next prime is 53621471. The reversal of 53621469 is 96412635.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53621467) and next prime (53621471).

It is not a de Polignac number, because 53621469 - 2¹ = 53621467 is a prime.

It is a super-2 number, since 2×53621469² = 5750523875435922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270717 + ... + 270914.

It is an arithmetic number, because the mean of its divisors is an integer number (7041216).

Almost surely, 2^53621469 is an apocalyptic number.

It is an amenable number.

53621469 is a deficient number, since it is larger than the sum of its proper divisors (30873123).

53621469 is a wasteful number, since it uses less digits than its factorization.

53621469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541648 (or 541645 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 53621469 is about 7322.6681612647. The cubic root of 53621469 is about 377.0910595801.

The spelling of 53621469 in words is "fifty-three million, six hundred twenty-one thousand, four hundred sixty-nine".