534918021 has 32 divisors (see below), whose sum is σ = 824584320. Its totient is φ = 305356800.

The previous prime is 534918019. The next prime is 534918023. The reversal of 534918021 is 120819435.

It is an interprime number because it is at equal distance from previous prime (534918019) and next prime (534918023).

It is not a de Polignac number, because 534918021 - 2¹ = 534918019 is a prime.

It is a super-2 number, since 2×534918021² = 572274578381112882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534918023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32421 + ... + 46053.

It is an arithmetic number, because the mean of its divisors is an integer number (25768260).

Almost surely, 2^534918021 is an apocalyptic number.

It is an amenable number.

534918021 is a deficient number, since it is larger than the sum of its proper divisors (289666299).

534918021 is a wasteful number, since it uses less digits than its factorization.

534918021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 534918021 is about 23128.2948139287. The cubic root of 534918021 is about 811.7626710820.

The spelling of 534918021 in words is "five hundred thirty-four million, nine hundred eighteen thousand, twenty-one".