152534421 has 40 divisors (see below), whose sum is σ = 259852824. Its totient is φ = 88335360.

The previous prime is 152534419. The next prime is 152534423. The reversal of 152534421 is 124435251.

It is an interprime number because it is at equal distance from previous prime (152534419) and next prime (152534423).

It can be written as a sum of positive squares in 4 ways, for example, as 16695396 + 135839025 = 4086^2 + 11655^2 .

It is not a de Polignac number, because 152534421 - 2¹ = 152534419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152534423) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13641 + ... + 22161.

Almost surely, 2^152534421 is an apocalyptic number.

It is an amenable number.

152534421 is a deficient number, since it is larger than the sum of its proper divisors (107318403).

152534421 is a wasteful number, since it uses less digits than its factorization.

152534421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563 (or 8554 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 152534421 is about 12350.4826221488. The cubic root of 152534421 is about 534.3050586209.

Adding to 152534421 its reverse (124435251), we get a palindrome (276969672).

The spelling of 152534421 in words is "one hundred fifty-two million, five hundred thirty-four thousand, four hundred twenty-one".