53213315 has 16 divisors (see below), whose sum is σ = 67783392. Its totient is φ = 39965184.

The previous prime is 53213309. The next prime is 53213323. The reversal of 53213315 is 51331235.

53213315 = T₁₄₁₉ + T₁₄₂₀ + ... + T₁₄₆₉.

It is a cyclic number.

It is not a de Polignac number, because 53213315 - 2¹⁴ = 53196931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63932 + ... + 64758.

It is an arithmetic number, because the mean of its divisors is an integer number (4236462).

Almost surely, 2^53213315 is an apocalyptic number.

53213315 is a deficient number, since it is larger than the sum of its proper divisors (14570077).

53213315 is a wasteful number, since it uses less digits than its factorization.

53213315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606.

The product of its digits is 1350, while the sum is 23.

The square root of 53213315 is about 7294.7457118120. The cubic root of 53213315 is about 376.1318455499.

The spelling of 53213315 in words is "fifty-three million, two hundred thirteen thousand, three hundred fifteen".