153540457 has 4 divisors (see below), whose sum is σ = 175474816. Its totient is φ = 131606100.

The previous prime is 153540437. The next prime is 153540461. The reversal of 153540457 is 754045351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754045351 = 1427 ⋅528413.

It is a cyclic number.

It is not a de Polignac number, because 153540457 - 2¹⁵ = 153507689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153540437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10967169 + ... + 10967182.

It is an arithmetic number, because the mean of its divisors is an integer number (43868704).

Almost surely, 2^153540457 is an apocalyptic number.

It is an amenable number.

153540457 is a deficient number, since it is larger than the sum of its proper divisors (21934359).

153540457 is an equidigital number, since it uses as much as digits as its factorization.

153540457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21934358.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 153540457 is about 12391.1442974408. The cubic root of 153540457 is about 535.4771496528.

The spelling of 153540457 in words is "one hundred fifty-three million, five hundred forty thousand, four hundred fifty-seven".