157535421 has 8 divisors (see below), whose sum is σ = 210148224. Its totient is φ = 104973120.

The previous prime is 157535419. The next prime is 157535423. The reversal of 157535421 is 124535751.

It is an interprime number because it is at equal distance from previous prime (157535419) and next prime (157535423).

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

It is not a de Polignac number, because 157535421 - 2¹ = 157535419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157535423) 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, 4620 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (26268528).

Almost surely, 2^157535421 is an apocalyptic number.

It is an amenable number.

157535421 is a deficient number, since it is larger than the sum of its proper divisors (52612803).

157535421 is a wasteful number, since it uses less digits than its factorization.

157535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25251.

The product of its digits is 21000, while the sum is 33.

The square root of 157535421 is about 12551.3115250957. The cubic root of 157535421 is about 540.0816303207.

The spelling of 157535421 in words is "one hundred fifty-seven million, five hundred thirty-five thousand, four hundred twenty-one".