152440521 has 8 divisors (see below), whose sum is σ = 203337024. Its totient is φ = 101585520.

The previous prime is 152440499. The next prime is 152440529. The reversal of 152440521 is 125044251.

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

It is not a de Polignac number, because 152440521 - 2²³ = 144051913 is a prime.

It is a super-2 number, since 2×152440521² = 46476224885502882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 152440491 and 152440500.

It is not an unprimeable number, because it can be changed into a prime (152440529) 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, 445 + ... + 17466.

It is an arithmetic number, because the mean of its divisors is an integer number (25417128).

Almost surely, 2^152440521 is an apocalyptic number.

It is an amenable number.

152440521 is a deficient number, since it is larger than the sum of its proper divisors (50896503).

152440521 is a wasteful number, since it uses less digits than its factorization.

152440521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 152440521 is about 12346.6805660469. The cubic root of 152440521 is about 534.1953969386.

Adding to 152440521 its reverse (125044251), we get a palindrome (277484772).

The spelling of 152440521 in words is "one hundred fifty-two million, four hundred forty thousand, five hundred twenty-one".