15053421 has 8 divisors (see below), whose sum is σ = 20176000. Its totient is φ = 9983232.

The previous prime is 15053399. The next prime is 15053429. The reversal of 15053421 is 12435051.

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

It is not a de Polignac number, because 15053421 - 2¹⁰ = 15052397 is a prime.

It is a super-5 number, since 5×15053421⁵ (a number of 37 digits) contains 55555 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 (15053429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12421 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (2522000).

Almost surely, 2^15053421 is an apocalyptic number.

It is an amenable number.

15053421 is a deficient number, since it is larger than the sum of its proper divisors (5122579).

15053421 is a wasteful number, since it uses less digits than its factorization.

15053421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26195.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 15053421 is about 3879.8738381551. The cubic root of 15053421 is about 246.9136328154.

Adding to 15053421 its reverse (12435051), we get a palindrome (27488472).

The spelling of 15053421 in words is "fifteen million, fifty-three thousand, four hundred twenty-one".