157478761 has 8 divisors (see below), whose sum is σ = 172080864. Its totient is φ = 142924320.

The previous prime is 157478749. The next prime is 157478777. The reversal of 157478761 is 167874751.

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

It is not a de Polignac number, because 157478761 - 2¹¹ = 157476713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157478261) 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, 4815 + ... + 18388.

It is an arithmetic number, because the mean of its divisors is an integer number (21510108).

Almost surely, 2^157478761 is an apocalyptic number.

157478761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157478761 is a deficient number, since it is larger than the sum of its proper divisors (14602103).

157478761 is a wasteful number, since it uses less digits than its factorization.

157478761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23831.

The product of its digits is 329280, while the sum is 46.

The square root of 157478761 is about 12549.0541874677. The cubic root of 157478761 is about 540.0168730439.

The spelling of 157478761 in words is "one hundred fifty-seven million, four hundred seventy-eight thousand, seven hundred sixty-one".