19552157 has 4 divisors (see below), whose sum is σ = 19692960. Its totient is φ = 19411356.

The previous prime is 19552153. The next prime is 19552189. The reversal of 19552157 is 75125591.

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: 75125591 = 3121 ⋅24071.

It is a cyclic number.

It is not a de Polignac number, because 19552157 - 2² = 19552153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19552153) 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, 70193 + ... + 70470.

It is an arithmetic number, because the mean of its divisors is an integer number (4923240).

Almost surely, 2^19552157 is an apocalyptic number.

It is an amenable number.

19552157 is a deficient number, since it is larger than the sum of its proper divisors (140803).

19552157 is a wasteful number, since it uses less digits than its factorization.

19552157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140802.

The product of its digits is 15750, while the sum is 35.

The square root of 19552157 is about 4421.7821067981. The cubic root of 19552157 is about 269.4003932220.

The spelling of 19552157 in words is "nineteen million, five hundred fifty-two thousand, one hundred fifty-seven".