157052477 has 4 divisors (see below), whose sum is σ = 166290876. Its totient is φ = 147814080.

The previous prime is 157052473. The next prime is 157052507. The reversal of 157052477 is 774250751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774250751 = 25579 ⋅30269.

It can be written as a sum of positive squares in 2 ways, for example, as 78393316 + 78659161 = 8854^2 + 8869^2 .

It is a cyclic number.

It is not a de Polignac number, because 157052477 - 2² = 157052473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157052477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157052473) 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, 4619174 + ... + 4619207.

It is an arithmetic number, because the mean of its divisors is an integer number (41572719).

Almost surely, 2^157052477 is an apocalyptic number.

157052477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

157052477 is a deficient number, since it is larger than the sum of its proper divisors (9238399).

157052477 is an equidigital number, since it uses as much as digits as its factorization.

157052477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238398.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 157052477 is about 12532.0579714586. The cubic root of 157052477 is about 539.5291700748.

The spelling of 157052477 in words is "one hundred fifty-seven million, fifty-two thousand, four hundred seventy-seven".