65421153 has 24 divisors (see below), whose sum is σ = 108229056. Its totient is φ = 37303200.

The previous prime is 65421121. The next prime is 65421179. The reversal of 65421153 is 35112456.

65421153 is a `hidden beast` number, since 6 + 542 + 115 + 3 = 666.

It is not a de Polignac number, because 65421153 - 2⁵ = 65421121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65421113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40858 + ... + 42428.

It is an arithmetic number, because the mean of its divisors is an integer number (4509544).

Almost surely, 2^65421153 is an apocalyptic number.

65421153 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65421153 is a deficient number, since it is larger than the sum of its proper divisors (42807903).

65421153 is a wasteful number, since it uses less digits than its factorization.

65421153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2242 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 65421153 is about 8088.3343773610. The cubic root of 65421153 is about 402.9390869438.

The spelling of 65421153 in words is "sixty-five million, four hundred twenty-one thousand, one hundred fifty-three".